diff --git a/.github/workflows/build-on-pull-request.yml b/.github/workflows/build-on-pull-request.yml
index 7420c64..430e3ec 100644
--- a/.github/workflows/build-on-pull-request.yml
+++ b/.github/workflows/build-on-pull-request.yml
@@ -39,6 +39,8 @@ jobs:
     uses: ./.github/workflows/run-tests.yml
     with:
       branch: ${{ github.head_ref || github.ref_name }}
+    env:
+      USE_EXTERNAL_OLLAMA_HOST: "false"
 
   build-docs:
     name: Build Documentation