diff --git a/examples/deployment/docker/db_server/postgresql/Dockerfile b/examples/deployment/docker/db_server/postgresql/Dockerfile
index defaf28b09..ac76052b70 100644
--- a/examples/deployment/docker/db_server/postgresql/Dockerfile
+++ b/examples/deployment/docker/db_server/postgresql/Dockerfile
@@ -1,4 +1,4 @@
-FROM postgres:17.9@sha256:b994732fcf33f73776c65d3a5bf1f80c00120ba5007e8ab90307b1a743c1fc16
+FROM postgres:18.3@sha256:52e6ffd11fddd081ae63880b635b2a61c14008c17fc98cdc7ce5472265516dd0
 
 # expects the build context to be: $GOPATH/src/github.com/google/trillian
 COPY storage/postgresql/schema/storage.sql /docker-entrypoint-initdb.d/storage.sql