diff --git a/.github/workflows/ci-tests.yml b/.github/workflows/ci-tests.yml
index c63bb36d..a4bb45e0 100644
--- a/.github/workflows/ci-tests.yml
+++ b/.github/workflows/ci-tests.yml
@@ -163,6 +163,10 @@ jobs:
               run: nominatim admin --check-database
               working-directory: data-env
 
+            - name: Warm up database
+              run: nominatim admin --warm
+              working-directory: data-env
+
             - name: Run update
               run: |
                    nominatim replication --init