diff --git a/ci-scripts/oai-ci-vm-tool b/ci-scripts/oai-ci-vm-tool
index fd867b6661..1245d046ff 100755
--- a/ci-scripts/oai-ci-vm-tool
+++ b/ci-scripts/oai-ci-vm-tool
@@ -254,7 +254,7 @@ case $key in
     LOG_PATTERN=.Rel15.txt
     NB_PATTERN_FILES=9
     BUILD_OPTIONS="--phy_simulators"
-    VM_MEMORY=4096
+    VM_MEMORY=8192
     RUN_OPTIONS="./run_exec_autotests.bash -g \"01510*\" -q -np -b"
     NBARGS=$[$NBARGS+256]
     shift
@@ -333,7 +333,7 @@ case $key in
         LOG_PATTERN=.Rel15.txt
         NB_PATTERN_FILES=9
         BUILD_OPTIONS="--phy_simulators"
-	VM_MEMORY=4096
+	VM_MEMORY=8192
         RUN_OPTIONS="./run_exec_autotests.bash -g \"01510*\" -q -np -b"
         NBARGS=$[$NBARGS+256]
         ;;