diff --git a/.env b/.env
index d01967e32..149ffbc68 100644
--- a/.env
+++ b/.env
@@ -23,4 +23,4 @@ COMPOSE_PROJECT_NAME='metacall'
 # Configure default variables
 METACALL_PATH=/usr/local/metacall
 METACALL_BUILD_TYPE=relwithdebinfo
-METACALL_BASE_IMAGE=debian:bookworm-slim
+METACALL_BASE_IMAGE=debian:bullseye-slim # debian:bookworm-slim
diff --git a/tools/metacall-runtime.sh b/tools/metacall-runtime.sh
index fba2161a4..e89ba54c9 100755
--- a/tools/metacall-runtime.sh
+++ b/tools/metacall-runtime.sh
@@ -77,7 +77,7 @@ sub_apt(){
 sub_python(){
 	echo "configure python"
 	cd $ROOT_DIR
-	sub_apt_install_hold python3 libpython3.11
+	sub_apt_install_hold python3 libpython3.9 # libpython3.11
 }
 
 # Ruby
@@ -86,7 +86,7 @@ sub_ruby(){
 	cd $ROOT_DIR
 
 	$SUDO_CMD apt-get update
-	sub_apt_install_hold ruby3.1 libruby3.1
+	sub_apt_install_hold ruby2.7 libruby2.7 # ruby3.1 libruby3.1
 }
 
 # NetCore
@@ -163,7 +163,7 @@ sub_nodejs(){
 	echo "configure node"
 
 	# Install NodeJS library
-	sub_apt_install_hold libnode108
+	sub_apt_install_hold libnode72 # libnode108
 }
 
 # TypeScript
diff --git a/tools/runtime/Dockerfile b/tools/runtime/Dockerfile
index 3c3c58373..bf1eb3164 100644
--- a/tools/runtime/Dockerfile
+++ b/tools/runtime/Dockerfile
@@ -91,7 +91,7 @@ COPY --from=builder /usr/local/lib/plugins /usr/local/lib/plugins
 COPY --from=builder /usr/local/lib/node_modules/ /usr/local/lib/node_modules/
 
 # Copy python dependencies (and port) from builder
-COPY --from=builder /usr/local/lib/python3.11/dist-packages/metacall/ /usr/local/lib/python3.11/dist-packages/metacall/
+COPY --from=builder /usr/local/lib/python3.9/dist-packages/metacall/ /usr/local/lib/python3.9/dist-packages/metacall/
 
 # Copy headers from builder
 COPY --from=builder /usr/local/include/metacall /usr/local/include/metacall