diff --git a/docker-compose.yml b/docker-compose.yml
index 0f7a207..f1b941b 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -19,7 +19,7 @@ services:
       - matrix
 
   db:
-    image: docker.io/postgres:12.22-alpine@sha256:7c8f4870583184ebadf7f17a6513620aac5f365a7938dc6a6911c1d5df2f481a
+    image: docker.io/postgres:17.3-alpine@sha256:8c62578d320ff7257343f9e9d81f687c18e3f817208711b90eccd6c392a07215
     restart: unless-stopped
     environment:
       - POSTGRES_USER=${DC_MATRIX_POSTGRES_USER:-synapse}