diff --git a/.gitea/workflows/workflow.yml b/.gitea/workflows/workflow.yml
index e3614ed..e30ac43 100644
--- a/.gitea/workflows/workflow.yml
+++ b/.gitea/workflows/workflow.yml
@@ -36,7 +36,7 @@ jobs:
     # --- Add database service definition ---
     services:
       postgres:
-        image: postgres:18.0
+        image: postgres:18.3-alpine
         env:
           # Use secrets for DB init, with fallbacks for flexibility
           POSTGRES_USER: ${{ secrets.DB_TEST_USER || 'testuser' }}
diff --git a/docker-compose.yaml b/docker-compose.yaml
index b5e1e81..28672af 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -19,7 +19,7 @@ services:
 
   # PostgreSQL Database Service
   auth_db:
-    image: postgres:18.0-alpine # Use an official Postgres image (Alpine variant is smaller)
+    image: postgres:18.3-alpine # Use an official Postgres image (Alpine variant is smaller)
     container_name: icarus_auth_db # Optional: Give the container a specific name
     environment:
       # These MUST match the user, password, and database name in the DATABASE_URL above