diff --git a/podman-matrix/10_install.sh b/podman-matrix/10_install.sh
index 3404007..8620514 100755
--- a/podman-matrix/10_install.sh
+++ b/podman-matrix/10_install.sh
@@ -32,6 +32,7 @@ echo -n "Waiting for PostgreSQL to be ready... " && \
 ( podman logs -f synapse-db 2>&1 & ) | grep -q 'database system is ready to accept connections' && \
 echo "OK." && \
 podman run -d --name ${container_name} --pod ${pod_name} \
+  --add-host ${db_container_name}:127.0.0.1 \
   --mount type=volume,src=${confvolume},dst=/data ${synapse_image}:${synapse_version} && \
 echo -n "Waiting for background tasks to end... " && \
 ( podman logs -f synapse 2>&1 & ) | grep -q 'No more background updates to do' && \