diff --git a/docker-compose.yml b/docker-compose.yml
index 9fcd20f..ac614c0 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -19,7 +19,7 @@ services:
       - matrix
 
   db:
-    image: docker.io/postgres:12.22-alpine@sha256:9f623a326208d85c49c63e2eb5abf0cc50c2e148a9f1a9970d504611ce913a2a
+    image: docker.io/postgres:12.22-alpine@sha256:1fb72c8dc3fc1615e92293f5d922bf36a1b442dee23667250da8577466323ca3
     restart: unless-stopped
     environment:
       - POSTGRES_USER=${DC_MATRIX_POSTGRES_USER:-synapse}