diff --git a/ci-scripts/cls_cluster.py b/ci-scripts/cls_cluster.py
index 3f10a5e613..56c60f7551 100644
--- a/ci-scripts/cls_cluster.py
+++ b/ci-scripts/cls_cluster.py
@@ -266,7 +266,7 @@ class Cluster:
 		if self.ranAllowMerge: # merging MR branch into develop -> temporary image
 			imageTag = f'{self.ranBranch}-{self.ranCommitID[0:8]}'
 			if self.ranTargetBranch == 'develop':
-				ret = self.cmd.run(f'git diff HEAD..origin/develop -- cmake_targets/build_oai cmake_targets/tools/build_helper docker/Dockerfile.base.rhel8.2 | grep --colour=never -i INDEX')
+				ret = self.cmd.run(f'git diff HEAD..origin/develop -- cmake_targets/build_oai cmake_targets/tools/build_helper docker/Dockerfile.base.rhel9 | grep --colour=never -i INDEX')
 				result = re.search('index', ret.stdout)
 				if result is not None:
 					forceBaseImageBuild = True
@@ -306,7 +306,7 @@ class Cluster:
 			self._recreate_bc('ran-base', baseTag, 'openshift/ran-base-bc.yaml')
 			ranbase_job = self._start_build('ran-base')
 			attemptedImages += ['ran-base']
-			status = ranbase_job is not None and self._wait_build_end([ranbase_job], 600)
+			status = ranbase_job is not None and self._wait_build_end([ranbase_job], 800)
 			if not status: logging.error('failure during build of ran-base')
 			self.cmd.run(f'oc logs {ranbase_job} &> cmake_targets/log/ran-base.log') # cannot use cmd.run because of redirect
 			# recover logs by mounting image
@@ -322,19 +322,19 @@ class Cluster:
 		if status:
 			self._recreate_is_tag('oai-physim', imageTag, 'openshift/oai-physim-is.yaml')
 			self._recreate_bc('oai-physim', imageTag, 'openshift/oai-physim-bc.yaml')
-			self._retag_image_statement('ran-base', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-base', baseTag, 'docker/Dockerfile.phySim.rhel8.2')
+			self._retag_image_statement('ran-base', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-base', baseTag, 'docker/Dockerfile.phySim.rhel9')
 			physim_job = self._start_build('oai-physim')
 			attemptedImages += ['oai-physim']
 
 			self._recreate_is_tag('ran-build', imageTag, 'openshift/ran-build-is.yaml')
 			self._recreate_bc('ran-build', imageTag, 'openshift/ran-build-bc.yaml')
-			self._retag_image_statement('ran-base', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-base', baseTag, 'docker/Dockerfile.build.rhel8.2')
+			self._retag_image_statement('ran-base', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-base', baseTag, 'docker/Dockerfile.build.rhel9')
 			ranbuild_job = self._start_build('ran-build')
 			attemptedImages += ['ran-build']
 
 			self._recreate_is_tag('oai-clang', imageTag, 'openshift/oai-clang-is.yaml')
 			self._recreate_bc('oai-clang', imageTag, 'openshift/oai-clang-bc.yaml')
-			self._retag_image_statement('ran-base', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-base', baseTag, 'docker/Dockerfile.clang.rhel8.2')
+			self._retag_image_statement('ran-base', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-base', baseTag, 'docker/Dockerfile.clang.rhel9')
 			clang_job = self._start_build('oai-clang')
 			attemptedImages += ['oai-clang']
 
@@ -349,22 +349,22 @@ class Cluster:
 		if status:
 			self._recreate_is_tag('oai-enb', imageTag, 'openshift/oai-enb-is.yaml')
 			self._recreate_bc('oai-enb', imageTag, 'openshift/oai-enb-bc.yaml')
-			self._retag_image_statement('ran-base', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-base', baseTag, 'docker/Dockerfile.eNB.rhel8.2')
-			self._retag_image_statement('ran-build', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-build', imageTag, 'docker/Dockerfile.eNB.rhel8.2')
+			self._retag_image_statement('ran-base', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-base', baseTag, 'docker/Dockerfile.eNB.rhel9')
+			self._retag_image_statement('ran-build', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-build', imageTag, 'docker/Dockerfile.eNB.rhel9')
 			enb_job = self._start_build('oai-enb')
 			attemptedImages += ['oai-enb']
 
 			self._recreate_is_tag('oai-gnb', imageTag, 'openshift/oai-gnb-is.yaml')
 			self._recreate_bc('oai-gnb', imageTag, 'openshift/oai-gnb-bc.yaml')
-			self._retag_image_statement('ran-base', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-base', baseTag, 'docker/Dockerfile.gNB.rhel8.2')
-			self._retag_image_statement('ran-build', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-build', imageTag, 'docker/Dockerfile.gNB.rhel8.2')
+			self._retag_image_statement('ran-base', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-base', baseTag, 'docker/Dockerfile.gNB.rhel9')
+			self._retag_image_statement('ran-build', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-build', imageTag, 'docker/Dockerfile.gNB.rhel9')
 			gnb_job = self._start_build('oai-gnb')
 			attemptedImages += ['oai-gnb']
 
 			self._recreate_is_tag('oai-gnb-aw2s', imageTag, 'openshift/oai-gnb-aw2s-is.yaml')
 			self._recreate_bc('oai-gnb-aw2s', imageTag, 'openshift/oai-gnb-aw2s-bc.yaml')
-			self._retag_image_statement('ran-base', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-base', baseTag, 'docker/Dockerfile.gNB.aw2s.rhel8.2')
-			self._retag_image_statement('ran-build', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-build', imageTag, 'docker/Dockerfile.gNB.aw2s.rhel8.2')
+			self._retag_image_statement('ran-base', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-base', baseTag, 'docker/Dockerfile.gNB.aw2s.rhel9')
+			self._retag_image_statement('ran-build', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-build', imageTag, 'docker/Dockerfile.gNB.aw2s.rhel9')
 			gnb_aw2s_job = self._start_build('oai-gnb-aw2s')
 			attemptedImages += ['oai-gnb-aw2s']
 
@@ -378,22 +378,22 @@ class Cluster:
 
 			self._recreate_is_tag('oai-nr-cuup', imageTag, 'openshift/oai-nr-cuup-is.yaml')
 			self._recreate_bc('oai-nr-cuup', imageTag, 'openshift/oai-nr-cuup-bc.yaml')
-			self._retag_image_statement('ran-base', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-base', baseTag, 'docker/Dockerfile.nr-cuup.rhel8.2')
-			self._retag_image_statement('ran-build', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-build', imageTag, 'docker/Dockerfile.nr-cuup.rhel8.2')
+			self._retag_image_statement('ran-base', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-base', baseTag, 'docker/Dockerfile.nr-cuup.rhel9')
+			self._retag_image_statement('ran-build', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-build', imageTag, 'docker/Dockerfile.nr-cuup.rhel9')
 			nr_cuup_job = self._start_build('oai-nr-cuup')
 			attemptedImages += ['oai-nr-cuup']
 
 			self._recreate_is_tag('oai-lte-ue', imageTag, 'openshift/oai-lte-ue-is.yaml')
 			self._recreate_bc('oai-lte-ue', imageTag, 'openshift/oai-lte-ue-bc.yaml')
-			self._retag_image_statement('ran-base', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-base', baseTag, 'docker/Dockerfile.lteUE.rhel8.2')
-			self._retag_image_statement('ran-build', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-build', imageTag, 'docker/Dockerfile.lteUE.rhel8.2')
+			self._retag_image_statement('ran-base', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-base', baseTag, 'docker/Dockerfile.lteUE.rhel9')
+			self._retag_image_statement('ran-build', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-build', imageTag, 'docker/Dockerfile.lteUE.rhel9')
 			lteue_job = self._start_build('oai-lte-ue')
 			attemptedImages += ['oai-lte-ue']
 
 			self._recreate_is_tag('oai-nr-ue', imageTag, 'openshift/oai-nr-ue-is.yaml')
 			self._recreate_bc('oai-nr-ue', imageTag, 'openshift/oai-nr-ue-bc.yaml')
-			self._retag_image_statement('ran-base', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-base', baseTag, 'docker/Dockerfile.nrUE.rhel8.2')
-			self._retag_image_statement('ran-build', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-build', imageTag, 'docker/Dockerfile.nrUE.rhel8.2')
+			self._retag_image_statement('ran-base', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-base', baseTag, 'docker/Dockerfile.nrUE.rhel9')
+			self._retag_image_statement('ran-build', 'image-registry.openshift-image-registry.svc:5000/oaicicd-ran/ran-build', imageTag, 'docker/Dockerfile.nrUE.rhel9')
 			nrue_job = self._start_build('oai-nr-ue')
 			attemptedImages += ['oai-nr-ue']
 
diff --git a/ci-scripts/cls_containerize.py b/ci-scripts/cls_containerize.py
index 6b5e4e50af..520876ad06 100644
--- a/ci-scripts/cls_containerize.py
+++ b/ci-scripts/cls_containerize.py
@@ -358,7 +358,7 @@ class Containerize():
 			self.cliBuildOptions = '--no-cache'
 		elif self.host == 'Red Hat':
 			self.cli = 'sudo podman'
-			self.dockerfileprefix = '.rhel8.2'
+			self.dockerfileprefix = '.rhel9'
 			self.cliBuildOptions = '--no-cache --disable-compression'
 
 		# we always build the ran-build image with all targets
diff --git a/cmake_targets/tools/build_helper b/cmake_targets/tools/build_helper
index 7806ee999b..52ae420081 100755
--- a/cmake_targets/tools/build_helper
+++ b/cmake_targets/tools/build_helper
@@ -32,7 +32,7 @@ OS_DISTRO=$(grep "^ID=" /etc/os-release | sed "s/ID=//" | sed "s/\"//g")
 OS_RELEASE=$(grep "^VERSION_ID=" /etc/os-release | sed "s/VERSION_ID=//" | sed "s/\"//g")
 case "$OS_DISTRO" in
   fedora) OS_BASEDISTRO="fedora"; INSTALLER="dnf"; CMAKE="cmake" ;;
-  rhel)   OS_BASEDISTRO="fedora"; INSTALLER="yum"; CMAKE="cmake3" ;;
+  rhel)   OS_BASEDISTRO="fedora"; INSTALLER="dnf"; CMAKE="cmake" ;;
   rocky)  OS_BASEDISTRO="fedora"; INSTALLER="dnf"; CMAKE="cmake" ;;
   centos) OS_BASEDISTRO="centos"; INSTALLER="yum"; CMAKE="cmake3" ;;
   debian) OS_BASEDISTRO="debian"; INSTALLER="apt-get"; CMAKE="cmake" ;;
@@ -629,6 +629,7 @@ check_install_oai_software() {
 	libtool  \
 	patch \
 	openssl \
+        zlib1g-dev \
         xxd
 
   elif [[ "$OS_BASEDISTRO" == "fedora" ]]; then
@@ -637,7 +638,7 @@ check_install_oai_software() {
         echo "EPEL repos already present. Good."
       else
         echo "EPEL repos not present. Installing them."
-        $SUDO $INSTALLER install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
+        $SUDO $INSTALLER install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm
       fi
     fi
 
@@ -666,7 +667,8 @@ check_install_oai_software() {
       lapack-devel \
       blas \
       blas-devel \
-      vim-common
+      vim-common \
+      zlib-devel
   fi
 
     install_asn1c_from_source $1
diff --git a/docker/Dockerfile.base.rhel8.2 b/docker/Dockerfile.base.rhel9
similarity index 92%
rename from docker/Dockerfile.base.rhel8.2
rename to docker/Dockerfile.base.rhel9
index dd0d4c0e43..56b1ce7a23 100644
--- a/docker/Dockerfile.base.rhel8.2
+++ b/docker/Dockerfile.base.rhel9
@@ -21,12 +21,12 @@
 #---------------------------------------------------------------------
 #
 # Dockerfile for the Open-Air-Interface BUILD service
-#   Valid for RHEL8
+#   Valid for RHEL9
 #
 #---------------------------------------------------------------------
 
 
-FROM registry.access.redhat.com/ubi8/ubi:latest AS ran-base
+FROM registry.access.redhat.com/ubi9/ubi:latest AS ran-base
 ARG NEEDED_GIT_PROXY
 ENV TZ=Europe/Paris
 ENV BUILD_UHD_FROM_SOURCE=True
@@ -39,12 +39,13 @@ COPY ./etc-pki-entitlement /etc/pki/entitlement
 COPY ./rhsm-conf /etc/rhsm
 COPY ./rhsm-ca /etc/rhsm/ca
 
+ENV SMDEV_CONTAINER_OFF=1
 #install developers pkg/repo
 RUN rm -f /etc/rhsm-host && \
-    yum repolist --disablerepo=* && \
-    subscription-manager repos --enable codeready-builder-for-rhel-8-x86_64-rpms && \
-    yum update -y && \
-    yum install -y \
+    subscription-manager repos --enable codeready-builder-for-rhel-9-x86_64-rpms && \
+    dnf update -y && \
+    cat /etc/os-release && \
+    dnf install -y \
        #gcc needed for build_oai
        gcc gcc-c++ \ 
        diffutils \
diff --git a/docker/Dockerfile.build.rhel8.2 b/docker/Dockerfile.build.rhel9
similarity index 98%
rename from docker/Dockerfile.build.rhel8.2
rename to docker/Dockerfile.build.rhel9
index 5dd370a02d..72c237f6bc 100644
--- a/docker/Dockerfile.build.rhel8.2
+++ b/docker/Dockerfile.build.rhel9
@@ -21,7 +21,7 @@
 #---------------------------------------------------------------------
 #
 # Dockerfile for the Open-Air-Interface BUILD service
-#   Valid for RHEL8
+#   Valid for RHEL9
 #
 #---------------------------------------------------------------------
 
diff --git a/docker/Dockerfile.clang.rhel8.2 b/docker/Dockerfile.clang.rhel9
similarity index 97%
rename from docker/Dockerfile.clang.rhel8.2
rename to docker/Dockerfile.clang.rhel9
index 5111597f75..fccef45eec 100644
--- a/docker/Dockerfile.clang.rhel8.2
+++ b/docker/Dockerfile.clang.rhel9
@@ -21,7 +21,7 @@
 #---------------------------------------------------------------------
 #
 # Dockerfile for the Open-Air-Interface BUILD service
-#   Valid for RHEL8
+#   Valid for RHEL9
 #
 #---------------------------------------------------------------------
 
@@ -32,7 +32,7 @@ WORKDIR /oai-ran
 COPY . .
 
 #only install LLVM (clang, ...) for this container, the others don't need it
-RUN yum install -y llvm-toolset
+RUN dnf install -y llvm-toolset
 
 #run build_oai to build the target image
 RUN /bin/sh oaienv && \
diff --git a/docker/Dockerfile.eNB.rhel8.2 b/docker/Dockerfile.eNB.rhel9
similarity index 83%
rename from docker/Dockerfile.eNB.rhel8.2
rename to docker/Dockerfile.eNB.rhel9
index 3fa2b661e0..d2ec7afd43 100644
--- a/docker/Dockerfile.eNB.rhel8.2
+++ b/docker/Dockerfile.eNB.rhel9
@@ -21,7 +21,7 @@
 #---------------------------------------------------------------------
 #
 # Dockerfile for the Open-Air-Interface BUILD service
-#   Valid for RHEL8
+#   Valid for RHEL9
 #
 #---------------------------------------------------------------------
 
@@ -33,11 +33,11 @@ RUN python3 ./docker/scripts/generateTemplate.py ./docker/scripts/enb_parameters
     cp /oai-ran/docker/scripts/enb_entrypoint.sh /oai-ran/docker/scripts/entrypoint.sh
 
 #start from scratch for target executable
-FROM registry.access.redhat.com/ubi8/ubi:latest as oai-enb
+FROM registry.access.redhat.com/ubi9/ubi:latest as oai-enb
 ENV TZ=Europe/Paris
 
-RUN yum update -y && \
-    yum install -y --enablerepo="ubi-8-codeready-builder" \
+RUN dnf update -y && \
+    dnf install -y \
         lksctp-tools \
         tzdata \
         procps-ng \
@@ -72,24 +72,24 @@ COPY --from=enb-build \
     /usr/local/lib/
 
 COPY --from=enb-base \
-    /lib64/libconfig.so.9 \
+    /lib64/libconfig.so.11 \
     /lib64/libblas.so.3 \
     /lib64/liblapack.so.3 \
     /lib64/liblapacke.so.3 \
-    /lib64/libboost_chrono.so.1.66.0 \
-    /lib64/libboost_date_time.so.1.66.0 \
-    /lib64/libboost_filesystem.so.1.66.0 \
-    /lib64/libboost_program_options.so.1.66.0 \
-    /lib64/libboost_serialization.so.1.66.0 \
-    /lib64/libboost_thread.so.1.66.0 \
-    /lib64/libboost_system.so.1.66.0 \
-    /lib64/libboost_unit_test_framework.so.1.66.0 \
-    /lib64/libboost_atomic.so.1.66.0 \
-    /lib64/libboost_timer.so.1.66.0 \
-    /lib64/libboost_regex.so.1.66.0 \
-    /lib64/libicudata.so.60 \
-    /lib64/libicui18n.so.60 \
-    /lib64/libicuuc.so.60 \
+    /lib64/libboost_chrono.so.1.75.0 \
+    /lib64/libboost_date_time.so.1.75.0 \
+    /lib64/libboost_filesystem.so.1.75.0 \
+    /lib64/libboost_program_options.so.1.75.0 \
+    /lib64/libboost_serialization.so.1.75.0 \
+    /lib64/libboost_thread.so.1.75.0 \
+    /lib64/libboost_system.so.1.75.0 \
+    /lib64/libboost_unit_test_framework.so.1.75.0 \
+    /lib64/libboost_atomic.so.1.75.0 \
+    /lib64/libboost_timer.so.1.75.0 \
+    /lib64/libboost_regex.so.1.75.0 \
+    /lib64/libicudata.so.67 \
+    /lib64/libicui18n.so.67 \
+    /lib64/libicuuc.so.67 \
     /lib64/
 
 
diff --git a/docker/Dockerfile.gNB.aw2s.rhel8.2 b/docker/Dockerfile.gNB.aw2s.rhel9
similarity index 93%
rename from docker/Dockerfile.gNB.aw2s.rhel8.2
rename to docker/Dockerfile.gNB.aw2s.rhel9
index ec4a4b5c91..7e5ea8fe25 100644
--- a/docker/Dockerfile.gNB.aw2s.rhel8.2
+++ b/docker/Dockerfile.gNB.aw2s.rhel9
@@ -21,7 +21,7 @@
 #---------------------------------------------------------------------
 #
 # Dockerfile for the Open-Air-Interface BUILD service
-#   Valid for RHEL8
+#   Valid for RHEL9
 #
 #---------------------------------------------------------------------
 
@@ -38,12 +38,11 @@ RUN /bin/sh oaienv && \
     ninja aw2sori_transpro
 
 #start from scratch for target executable
-FROM registry.access.redhat.com/ubi8/ubi:latest as oai-gnb-aw2s
+FROM registry.access.redhat.com/ubi9/ubi:latest as oai-gnb-aw2s
 ENV TZ=Europe/Paris
 
-RUN yum repolist --disablerepo=* && \
-    yum update -y && \
-    yum install -y --enablerepo="ubi-8-codeready-builder" \
+RUN dnf update -y && \
+    dnf install -y \
         procps-ng \
         libXpm \
         libX11 \
@@ -76,7 +75,7 @@ COPY --from=gnb-build \
     /usr/local/lib/
 
 COPY --from=gnb-base \
-    /lib64/libconfig.so.9 \
+    /lib64/libconfig.so.11 \
     /lib64/libforms.so.2 \
     /lib64/libblas.so.3 \
     /lib64/liblapack.so.3 \
diff --git a/docker/Dockerfile.gNB.rhel8.2 b/docker/Dockerfile.gNB.rhel9
similarity index 83%
rename from docker/Dockerfile.gNB.rhel8.2
rename to docker/Dockerfile.gNB.rhel9
index 187de03e37..b4d49f6acc 100644
--- a/docker/Dockerfile.gNB.rhel8.2
+++ b/docker/Dockerfile.gNB.rhel9
@@ -21,7 +21,7 @@
 #---------------------------------------------------------------------
 #
 # Dockerfile for the Open-Air-Interface BUILD service
-#   Valid for RHEL8
+#   Valid for RHEL9
 #
 #---------------------------------------------------------------------
 
@@ -33,12 +33,11 @@ RUN python3 ./docker/scripts/generateTemplate.py ./docker/scripts/gnb_parameters
     cp /oai-ran/docker/scripts/gnb_entrypoint.sh /oai-ran/docker/scripts/entrypoint.sh
 
 #start from scratch for target executable
-FROM registry.access.redhat.com/ubi8/ubi:latest as oai-gnb
+FROM registry.access.redhat.com/ubi9/ubi:latest as oai-gnb
 ENV TZ=Europe/Paris
 
-RUN yum repolist --disablerepo=* && \
-    yum update -y && \
-    yum install -y --enablerepo="ubi-8-codeready-builder" \
+RUN dnf update -y && \
+    dnf install -y \
         procps-ng \
         libXpm \
         libX11 \
@@ -77,25 +76,25 @@ COPY --from=gnb-build \
     /usr/local/lib/
 
 COPY --from=gnb-base \
-    /lib64/libconfig.so.9 \
+    /lib64/libconfig.so.11 \
     /lib64/libforms.so.2 \
     /lib64/libblas.so.3 \
     /lib64/liblapack.so.3 \
     /lib64/liblapacke.so.3 \
-    /lib64/libboost_chrono.so.1.66.0 \
-    /lib64/libboost_date_time.so.1.66.0 \
-    /lib64/libboost_filesystem.so.1.66.0 \
-    /lib64/libboost_program_options.so.1.66.0 \
-    /lib64/libboost_serialization.so.1.66.0 \
-    /lib64/libboost_thread.so.1.66.0 \
-    /lib64/libboost_system.so.1.66.0 \
-    /lib64/libboost_unit_test_framework.so.1.66.0 \
-    /lib64/libboost_atomic.so.1.66.0 \
-    /lib64/libboost_timer.so.1.66.0 \
-    /lib64/libboost_regex.so.1.66.0 \
-    /lib64/libicudata.so.60 \
-    /lib64/libicui18n.so.60 \
-    /lib64/libicuuc.so.60 \
+    /lib64/libboost_chrono.so.1.75.0 \
+    /lib64/libboost_date_time.so.1.75.0 \
+    /lib64/libboost_filesystem.so.1.75.0 \
+    /lib64/libboost_program_options.so.1.75.0 \
+    /lib64/libboost_serialization.so.1.75.0 \
+    /lib64/libboost_thread.so.1.75.0 \
+    /lib64/libboost_system.so.1.75.0 \
+    /lib64/libboost_unit_test_framework.so.1.75.0 \
+    /lib64/libboost_atomic.so.1.75.0 \
+    /lib64/libboost_timer.so.1.75.0 \
+    /lib64/libboost_regex.so.1.75.0 \
+    /lib64/libicudata.so.67 \
+    /lib64/libicui18n.so.67 \
+    /lib64/libicuuc.so.67 \
     /lib64/
 
 # Now we are copying from builder-image the UHD files.
diff --git a/docker/Dockerfile.lteRU.rhel8.2 b/docker/Dockerfile.lteRU.rhel9
similarity index 83%
rename from docker/Dockerfile.lteRU.rhel8.2
rename to docker/Dockerfile.lteRU.rhel9
index b4d53f367b..34fc389b38 100644
--- a/docker/Dockerfile.lteRU.rhel8.2
+++ b/docker/Dockerfile.lteRU.rhel9
@@ -21,7 +21,7 @@
 #---------------------------------------------------------------------
 #
 # Dockerfile for the Open-Air-Interface BUILD service
-#   Valid for RHEL8
+#   Valid for RHEL9
 #
 #---------------------------------------------------------------------
 
@@ -33,11 +33,11 @@ RUN python3 ./docker/scripts/generateTemplate.py ./docker/scripts/enb_parameters
     cp /oai-ran/docker/scripts/lte_ru_entrypoint.sh /oai-ran/docker/scripts/entrypoint.sh
 
 #start from scratch for target executable
-FROM registry.access.redhat.com/ubi8/ubi:latest as oai-lte-ru
+FROM registry.access.redhat.com/ubi9/ubi:latest as oai-lte-ru
 ENV TZ=Europe/Paris
 
-RUN yum update -y && \
-    yum install -y --enablerepo="ubi-8-codeready-builder" \
+RUN dnf update -y && \
+    dnf install -y \
         tzdata \
         procps-ng \
         atlas \
@@ -67,21 +67,21 @@ COPY --from=ru-build \
     /usr/local/lib/
 
 COPY --from=ru-base \
-    /lib64/libconfig.so.9 \
+    /lib64/libconfig.so.11 \
     /lib64/libblas.so.3 \
     /lib64/liblapack.so.3 \
     /lib64/liblapacke.so.3 \
-    /lib64/libboost_chrono.so.1.66.0 \
-    /lib64/libboost_date_time.so.1.66.0 \
-    /lib64/libboost_filesystem.so.1.66.0 \
-    /lib64/libboost_program_options.so.1.66.0 \
-    /lib64/libboost_serialization.so.1.66.0 \
-    /lib64/libboost_thread.so.1.66.0 \
-    /lib64/libboost_system.so.1.66.0 \
-    /lib64/libboost_unit_test_framework.so.1.66.0 \
-    /lib64/libboost_atomic.so.1.66.0 \
-    /lib64/libboost_timer.so.1.66.0 \
-    /lib64/libboost_regex.so.1.66.0 \
+    /lib64/libboost_chrono.so.1.75.0 \
+    /lib64/libboost_date_time.so.1.75.0 \
+    /lib64/libboost_filesystem.so.1.75.0 \
+    /lib64/libboost_program_options.so.1.75.0 \
+    /lib64/libboost_serialization.so.1.75.0 \
+    /lib64/libboost_thread.so.1.75.0 \
+    /lib64/libboost_system.so.1.75.0 \
+    /lib64/libboost_unit_test_framework.so.1.75.0 \
+    /lib64/libboost_atomic.so.1.75.0 \
+    /lib64/libboost_timer.so.1.75.0 \
+    /lib64/libboost_regex.so.1.75.0 \
     /lib64/
 
 # Copying from the ran-build image the USRP needed packages
diff --git a/docker/Dockerfile.lteUE.rhel8.2 b/docker/Dockerfile.lteUE.rhel9
similarity index 83%
rename from docker/Dockerfile.lteUE.rhel8.2
rename to docker/Dockerfile.lteUE.rhel9
index 3bbcbb5d4b..6715f5df49 100644
--- a/docker/Dockerfile.lteUE.rhel8.2
+++ b/docker/Dockerfile.lteUE.rhel9
@@ -21,7 +21,7 @@
 #---------------------------------------------------------------------
 #
 # Dockerfile for the Open-Air-Interface BUILD service
-#   Valid for RHEL8
+#   Valid for RHEL9
 #
 #---------------------------------------------------------------------
 
@@ -34,11 +34,11 @@ RUN python3 ./docker/scripts/generateTemplate.py ./docker/scripts/lte_ue_paramet
     cp /oai-ran/docker/scripts/lte_ue_entrypoint.sh /oai-ran/docker/scripts/entrypoint.sh
 
 #start from scratch for target executable
-FROM registry.access.redhat.com/ubi8/ubi:latest as oai-lte-ue
+FROM registry.access.redhat.com/ubi9/ubi:latest as oai-lte-ue
 ENV TZ=Europe/Paris
 
-RUN yum update -y && \
-    yum install -y --enablerepo="ubi-8-codeready-builder" \
+RUN dnf update -y && \
+    dnf install -y \
         lksctp-tools \
         procps-ng \
         tzdata \
@@ -74,24 +74,24 @@ COPY --from=lte-ue-build \
     /usr/local/lib/
 
 COPY --from=lte-ue-base \
-    /lib64/libconfig.so.9 \
+    /lib64/libconfig.so.11 \
     /lib64/libblas.so.3 \
     /lib64/liblapack.so.3 \
     /lib64/liblapacke.so.3 \
-    /lib64/libboost_chrono.so.1.66.0 \
-    /lib64/libboost_date_time.so.1.66.0 \
-    /lib64/libboost_filesystem.so.1.66.0 \
-    /lib64/libboost_program_options.so.1.66.0 \
-    /lib64/libboost_serialization.so.1.66.0 \
-    /lib64/libboost_thread.so.1.66.0 \
-    /lib64/libboost_system.so.1.66.0 \
-    /lib64/libboost_unit_test_framework.so.1.66.0 \
-    /lib64/libboost_atomic.so.1.66.0 \
-    /lib64/libboost_timer.so.1.66.0 \
-    /lib64/libboost_regex.so.1.66.0 \
-    /lib64/libicudata.so.60 \
-    /lib64/libicui18n.so.60 \
-    /lib64/libicuuc.so.60 \
+    /lib64/libboost_chrono.so.1.75.0 \
+    /lib64/libboost_date_time.so.1.75.0 \
+    /lib64/libboost_filesystem.so.1.75.0 \
+    /lib64/libboost_program_options.so.1.75.0 \
+    /lib64/libboost_serialization.so.1.75.0 \
+    /lib64/libboost_thread.so.1.75.0 \
+    /lib64/libboost_system.so.1.75.0 \
+    /lib64/libboost_unit_test_framework.so.1.75.0 \
+    /lib64/libboost_atomic.so.1.75.0 \
+    /lib64/libboost_timer.so.1.75.0 \
+    /lib64/libboost_regex.so.1.75.0 \
+    /lib64/libicudata.so.67 \
+    /lib64/libicui18n.so.67 \
+    /lib64/libicuuc.so.67 \
     /lib64/
 
 # Now we are copying from builder-image the UHD files.
diff --git a/docker/Dockerfile.nr-cuup.rhel8.2 b/docker/Dockerfile.nr-cuup.rhel9
similarity index 93%
rename from docker/Dockerfile.nr-cuup.rhel8.2
rename to docker/Dockerfile.nr-cuup.rhel9
index 903cfeaf89..9a45f7156a 100644
--- a/docker/Dockerfile.nr-cuup.rhel8.2
+++ b/docker/Dockerfile.nr-cuup.rhel9
@@ -21,7 +21,7 @@
 #---------------------------------------------------------------------
 #
 # Dockerfile for the Open-Air-Interface BUILD service
-#   Valid for RHEL 8.2
+#   Valid for RHEL 9
 #
 #---------------------------------------------------------------------
 
@@ -32,12 +32,12 @@ FROM ran-build:latest AS gnb-build
 RUN cp /oai-ran/docker/scripts/gnb_entrypoint.sh /oai-ran/docker/scripts/entrypoint.sh
 
 #start from scratch for target executable
-FROM registry.access.redhat.com/ubi8/ubi:latest as oai-nr-cuup
+FROM registry.access.redhat.com/ubi9/ubi:latest as oai-nr-cuup
 ENV TZ=Europe/Paris
 
 RUN yum repolist --disablerepo=* && \
     yum update -y && \
-    yum install -y --enablerepo="ubi-8-codeready-builder" \
+    yum install -y \
         procps-ng \
         lksctp-tools \
         tzdata \
@@ -59,7 +59,7 @@ COPY --from=gnb-build \
     /usr/local/lib/
 
 COPY --from=gnb-base \
-    /lib64/libconfig.so.9 \
+    /lib64/libconfig.so.11 \
     /lib64/libblas.so.3 \
     /lib64/liblapack.so.3 \
     /lib64/liblapacke.so.3 \
diff --git a/docker/Dockerfile.nrUE.rhel8.2 b/docker/Dockerfile.nrUE.rhel9
similarity index 84%
rename from docker/Dockerfile.nrUE.rhel8.2
rename to docker/Dockerfile.nrUE.rhel9
index 6242eb4c91..7dc0a5fba8 100644
--- a/docker/Dockerfile.nrUE.rhel8.2
+++ b/docker/Dockerfile.nrUE.rhel9
@@ -21,7 +21,7 @@
 #---------------------------------------------------------------------
 #
 # Dockerfile for the Open-Air-Interface BUILD service
-#   Valid for RHEL8
+#   Valid for RHEL9
 #
 #---------------------------------------------------------------------
 
@@ -33,11 +33,11 @@ RUN python3 ./docker/scripts/generateTemplate.py ./docker/scripts/nr_ue_paramete
     cp /oai-ran/docker/scripts/nr_ue_entrypoint.sh /oai-ran/docker/scripts/entrypoint.sh
 
 #start from scratch for target executable
-FROM registry.access.redhat.com/ubi8/ubi:latest as oai-nr-ue
+FROM registry.access.redhat.com/ubi9/ubi:latest as oai-nr-ue
 ENV TZ=Europe/Paris
 
-RUN yum update -y && \
-    yum install -y --enablerepo="ubi-8-codeready-builder" \
+RUN dnf update -y && \
+    dnf install -y \
         lksctp-tools \
         procps-ng \
         tzdata \
@@ -83,25 +83,25 @@ COPY --from=nr-ue-build \
     /usr/local/lib/
 
 COPY --from=nr-ue-base \
-    /lib64/libconfig.so.9 \
+    /lib64/libconfig.so.11 \
     /lib64/libblas.so.3 \
     /lib64/liblapack.so.3 \
     /lib64/liblapacke.so.3 \
     /lib64/libforms.so.2 \
-    /lib64/libboost_chrono.so.1.66.0 \
-    /lib64/libboost_date_time.so.1.66.0 \
-    /lib64/libboost_filesystem.so.1.66.0 \
-    /lib64/libboost_program_options.so.1.66.0 \
-    /lib64/libboost_serialization.so.1.66.0 \
-    /lib64/libboost_thread.so.1.66.0 \
-    /lib64/libboost_system.so.1.66.0 \
-    /lib64/libboost_unit_test_framework.so.1.66.0 \
-    /lib64/libboost_atomic.so.1.66.0 \
-    /lib64/libboost_timer.so.1.66.0 \
-    /lib64/libboost_regex.so.1.66.0 \
-    /lib64/libicudata.so.60 \
-    /lib64/libicui18n.so.60 \
-    /lib64/libicuuc.so.60 \
+    /lib64/libboost_chrono.so.1.75.0 \
+    /lib64/libboost_date_time.so.1.75.0 \
+    /lib64/libboost_filesystem.so.1.75.0 \
+    /lib64/libboost_program_options.so.1.75.0 \
+    /lib64/libboost_serialization.so.1.75.0 \
+    /lib64/libboost_thread.so.1.75.0 \
+    /lib64/libboost_system.so.1.75.0 \
+    /lib64/libboost_unit_test_framework.so.1.75.0 \
+    /lib64/libboost_atomic.so.1.75.0 \
+    /lib64/libboost_timer.so.1.75.0 \
+    /lib64/libboost_regex.so.1.75.0 \
+    /lib64/libicudata.so.67 \
+    /lib64/libicui18n.so.67 \
+    /lib64/libicuuc.so.67 \
     /lib64/
 
 # Now we are copying from builder-image the UHD files.
diff --git a/docker/Dockerfile.phySim.rhel8.2 b/docker/Dockerfile.phySim.rhel9
similarity index 94%
rename from docker/Dockerfile.phySim.rhel8.2
rename to docker/Dockerfile.phySim.rhel9
index 691c7e7765..92de17e9ae 100644
--- a/docker/Dockerfile.phySim.rhel8.2
+++ b/docker/Dockerfile.phySim.rhel9
@@ -21,7 +21,7 @@
 #---------------------------------------------------------------------
 #
 # Dockerfile for the Open-Air-Interface BUILD service
-#   Valid for RHEL8
+#   Valid for RHEL9
 #
 #---------------------------------------------------------------------
 
@@ -32,7 +32,7 @@ WORKDIR /oai-ran
 COPY . .
 
 #only install address and undefined behavior sanitizer for this container, the others don't need it
-RUN yum install -y libasan libubsan
+RUN dnf install -y libasan libubsan
 
 #run build_oai to build the target image
 RUN /bin/sh oaienv && \ 
@@ -41,10 +41,10 @@ RUN /bin/sh oaienv && \
     ./build_oai --phy_simulators --ninja --verbose-ci --sanitize --noavx512 -c --cmake-opt -DCMAKE_C_FLAGS=-Werror --cmake-opt -DCMAKE_CXX_FLAGS=-Werror --cmake-opt -DCMAKE_C_FLAGS=-Wno-unused-function --cmake-opt -DCMAKE_CXX_FLAGS=-Wno-unused-function
 
 #start from scratch for target executable
-FROM registry.access.redhat.com/ubi8/ubi:latest as oai-physim
+FROM registry.access.redhat.com/ubi9/ubi:latest as oai-physim
 
-RUN yum update -y && \
-    yum install -y --enablerepo="ubi-8-codeready-builder" \
+RUN dnf update -y && \
+    dnf install -y \
         lksctp-tools \
         tzdata \
         atlas \
@@ -86,7 +86,7 @@ COPY --from=phy-sim-build \
     /lib64/liblapack.so.3 \
     /lib64/libexslt.so.0 \
     /lib64/libxslt.so.1 \
-    /usr/lib64/libasan.so.5 \
+    /usr/lib64/libasan.so.6 \
     /usr/lib64/libubsan.so.1 \
     /oai-ran/cmake_targets/ran_build/build/libdfts.so \
     /oai-ran/cmake_targets/ran_build/build/libldpc.so \
diff --git a/docker/README.md b/docker/README.md
index 18f955b760..8b5ce4aae7 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -34,7 +34,7 @@ For all platforms, the strategy for building docker/podman images is the same:
 *  Then from the `ran-build` shared image, we can build target images for:
    -  eNB
    -  gNB (with UHD)
-   -  gNB (with AW2S), only on RHEL8
+   -  gNB (with AW2S), only on RHEL9
    -  lte-UE
    -  nr-UE
 
@@ -75,7 +75,7 @@ Targets can be:
 
 The currently-supported OS are:
 
-- `rhel8.2` for Red Hat Entreprise Linux (including images for an OpenShift cluster)
+- `rhel9` for Red Hat Entreprise Linux (including images for an OpenShift cluster)
 - `ubuntu20` for Ubuntu 20.04 LTS
 - `rocky` for Rocky-Linux 8.7
 
@@ -145,9 +145,9 @@ Note that the steps are identical for `rocky-linux`.
 
 Analogous to the above steps:
 ```
-sudo podman build --target ran-base --tag ran-base:latest --file docker/Dockerfile.base.rhel8.2 .
-sudo podman build --target ran-build --tag ran-build:latest --file docker/Dockerfile.build.rhel8.2 .
-sudo podman build --target oai-enb --tag oai-enb:latest --file docker/Dockerfile.eNB.rhel8.2 .
+sudo podman build --target ran-base --tag ran-base:latest --file docker/Dockerfile.base.rhel9 .
+sudo podman build --target ran-build --tag ran-build:latest --file docker/Dockerfile.build.rhel9 .
+sudo podman build --target oai-enb --tag oai-enb:latest --file docker/Dockerfile.eNB.rhel9 .
 ```
 
 # 5. Running modems using `docker` under Ubuntu 18.04 #
diff --git a/openshift/oai-clang-bc.yaml b/openshift/oai-clang-bc.yaml
index f882df8700..f51b68ed53 100644
--- a/openshift/oai-clang-bc.yaml
+++ b/openshift/oai-clang-bc.yaml
@@ -32,7 +32,7 @@ spec:
         type: "Binary"
     strategy:
         dockerStrategy:
-            dockerfilePath: "docker/Dockerfile.clang.rhel8.2"
+            dockerfilePath: "docker/Dockerfile.clang.rhel9"
     output:
         to:
             kind: "ImageStreamTag"
diff --git a/openshift/oai-enb-bc.yaml b/openshift/oai-enb-bc.yaml
index f9973224cc..215faf675e 100644
--- a/openshift/oai-enb-bc.yaml
+++ b/openshift/oai-enb-bc.yaml
@@ -30,7 +30,7 @@ spec:
         type: "Binary"
     strategy:
         dockerStrategy:
-            dockerfilePath: "docker/Dockerfile.eNB.rhel8.2"
+            dockerfilePath: "docker/Dockerfile.eNB.rhel9"
     output:
         to:
             kind: "ImageStreamTag"
diff --git a/openshift/oai-gnb-aw2s-bc.yaml b/openshift/oai-gnb-aw2s-bc.yaml
index fe803c57f3..2edbd73f87 100644
--- a/openshift/oai-gnb-aw2s-bc.yaml
+++ b/openshift/oai-gnb-aw2s-bc.yaml
@@ -34,7 +34,7 @@ spec:
             destinationDir: libori.so
     strategy:
         dockerStrategy:
-            dockerfilePath: "docker/Dockerfile.gNB.aw2s.rhel8.2"
+            dockerfilePath: "docker/Dockerfile.gNB.aw2s.rhel9"
     output:
         to:
             kind: "ImageStreamTag"
diff --git a/openshift/oai-gnb-bc.yaml b/openshift/oai-gnb-bc.yaml
index 78b9248f19..693cbfd784 100644
--- a/openshift/oai-gnb-bc.yaml
+++ b/openshift/oai-gnb-bc.yaml
@@ -30,7 +30,7 @@ spec:
         type: "Binary"
     strategy:
         dockerStrategy:
-            dockerfilePath: "docker/Dockerfile.gNB.rhel8.2"
+            dockerfilePath: "docker/Dockerfile.gNB.rhel9"
     output:
         to:
             kind: "ImageStreamTag"
diff --git a/openshift/oai-lte-ue-bc.yaml b/openshift/oai-lte-ue-bc.yaml
index a0dd92e670..7bb41456c6 100644
--- a/openshift/oai-lte-ue-bc.yaml
+++ b/openshift/oai-lte-ue-bc.yaml
@@ -30,7 +30,7 @@ spec:
         type: "Binary"
     strategy:
         dockerStrategy:
-            dockerfilePath: "docker/Dockerfile.lteUE.rhel8.2"
+            dockerfilePath: "docker/Dockerfile.lteUE.rhel9"
     output:
         to:
             kind: "ImageStreamTag"
diff --git a/openshift/oai-nr-cuup-bc.yaml b/openshift/oai-nr-cuup-bc.yaml
index d92560cc58..eceff70348 100644
--- a/openshift/oai-nr-cuup-bc.yaml
+++ b/openshift/oai-nr-cuup-bc.yaml
@@ -30,7 +30,7 @@ spec:
         type: "Binary"
     strategy:
         dockerStrategy:
-            dockerfilePath: "docker/Dockerfile.nr-cuup.rhel8.2"
+            dockerfilePath: "docker/Dockerfile.nr-cuup.rhel9"
     output:
         to:
             kind: "ImageStreamTag"
diff --git a/openshift/oai-nr-ue-bc.yaml b/openshift/oai-nr-ue-bc.yaml
index da9a5e424c..4c4bf3f9c6 100644
--- a/openshift/oai-nr-ue-bc.yaml
+++ b/openshift/oai-nr-ue-bc.yaml
@@ -30,7 +30,7 @@ spec:
         type: "Binary"
     strategy:
         dockerStrategy:
-            dockerfilePath: "docker/Dockerfile.nrUE.rhel8.2"
+            dockerfilePath: "docker/Dockerfile.nrUE.rhel9"
     output:
         to:
             kind: "ImageStreamTag"
diff --git a/openshift/oai-physim-bc.yaml b/openshift/oai-physim-bc.yaml
index 3aa6397811..248c5338d2 100644
--- a/openshift/oai-physim-bc.yaml
+++ b/openshift/oai-physim-bc.yaml
@@ -32,7 +32,7 @@ spec:
         type: "Binary"
     strategy:
         dockerStrategy:
-            dockerfilePath: "docker/Dockerfile.phySim.rhel8.2"
+            dockerfilePath: "docker/Dockerfile.phySim.rhel9"
     output:
         to:
             kind: "ImageStreamTag"
diff --git a/openshift/ran-base-bc.yaml b/openshift/ran-base-bc.yaml
index 16caa080eb..788e980fef 100644
--- a/openshift/ran-base-bc.yaml
+++ b/openshift/ran-base-bc.yaml
@@ -43,7 +43,7 @@ spec:
             destinationDir: rhsm-ca
     strategy:
         dockerStrategy:
-            dockerfilePath: "docker/Dockerfile.base.rhel8.2"
+            dockerfilePath: "docker/Dockerfile.base.rhel9"
     output:
         to:
             kind: "ImageStreamTag"
diff --git a/openshift/ran-build-bc.yaml b/openshift/ran-build-bc.yaml
index 1b93973dfd..93479a59f6 100644
--- a/openshift/ran-build-bc.yaml
+++ b/openshift/ran-build-bc.yaml
@@ -32,7 +32,7 @@ spec:
         type: "Binary"
     strategy:
         dockerStrategy:
-            dockerfilePath: "docker/Dockerfile.build.rhel8.2"
+            dockerfilePath: "docker/Dockerfile.build.rhel9"
     output:
         to:
             kind: "ImageStreamTag"