diff --git a/backend/tests/test_sprint31_unraid_template.py b/backend/tests/test_sprint31_unraid_template.py
index a1bf9629..a44af6b3 100644
--- a/backend/tests/test_sprint31_unraid_template.py
+++ b/backend/tests/test_sprint31_unraid_template.py
@@ -67,7 +67,7 @@ def test_unraid_all_in_one_runtime_starts_embedded_postgis_backend_and_nginx() -
     nginx_config = (ROOT / "deploy" / "unraid" / "nginx-all-in-one.conf").read_text(encoding="utf-8")
     dockerignore = (ROOT / ".dockerignore").read_text(encoding="utf-8")
 
-    assert "FROM postgis/postgis:16-3.4-bookworm AS runtime" in dockerfile
+    assert "FROM postgis/postgis:16-3.5 AS runtime" in dockerfile
     assert "COPY --from=frontend-build /frontend/dist/ /usr/share/nginx/html/" in dockerfile
     assert 'CMD ["/usr/local/bin/geointel-all-in-one-start"]' in dockerfile
     assert "/usr/local/bin/docker-entrypoint.sh postgres &" in start_script
diff --git a/deploy/unraid/Dockerfile.all-in-one b/deploy/unraid/Dockerfile.all-in-one
index 4c6667cf..c9ceaff2 100644
--- a/deploy/unraid/Dockerfile.all-in-one
+++ b/deploy/unraid/Dockerfile.all-in-one
@@ -6,7 +6,7 @@ RUN npm install
 COPY frontend/ ./
 RUN npm run build
 
-FROM postgis/postgis:16-3.4-bookworm AS runtime
+FROM postgis/postgis:16-3.5 AS runtime
 
 ENV GEOINTEL_ENV=production \
     GEOINTEL_API_PREFIX=/api/v1 \