diff --git a/podman-matrix/vars.sh b/podman-matrix/vars.sh
index d7e84fd..ba9db0d 100644
--- a/podman-matrix/vars.sh
+++ b/podman-matrix/vars.sh
@@ -3,7 +3,7 @@
 synapse_image="git.garbaye.fr/garbaye/matrixdotorg-synapse"
 synapse_version='v1.105.1'
 postgres_image="docker.io/library/postgres"
-postgres_version='11-bookworm'
+postgres_version='12-alpine'
 ## default vars : override with ENV var
 listen_if="${GARBAYE_MATRIX_ENV_LISTENIF:-127.0.0.1}"
 listen_port="${GARBAYE_MATRIX_ENV_LISTENPORT:-8086}"