diff --git a/getting-started/assets/postgres/docker-compose-postgres.yml b/getting-started/assets/postgres/docker-compose-postgres.yml
index d36b8d2e69..d771beaec5 100644
--- a/getting-started/assets/postgres/docker-compose-postgres.yml
+++ b/getting-started/assets/postgres/docker-compose-postgres.yml
@@ -19,7 +19,7 @@
 
 services:
   postgres:
-    image: postgres:17.6
+    image: postgres:18.0
     ports:
       - "5432:5432"
     # set shared memory limit when using docker-compose
diff --git a/runtime/admin/src/testFixtures/resources/org/apache/polaris/admintool/Dockerfile-postgres-version b/runtime/admin/src/testFixtures/resources/org/apache/polaris/admintool/Dockerfile-postgres-version
index 847654fa2c..ec16fa4acb 100644
--- a/runtime/admin/src/testFixtures/resources/org/apache/polaris/admintool/Dockerfile-postgres-version
+++ b/runtime/admin/src/testFixtures/resources/org/apache/polaris/admintool/Dockerfile-postgres-version
@@ -19,4 +19,4 @@
 
 # Dockerfile to provide the image name and tag to a test.
 # Version is managed by Renovate - do not edit.
-FROM postgres:17.6-alpine
+FROM postgres:18.0-alpine