diff --git a/.github/workflows/application_tester.yml b/.github/workflows/application_tester.yml
index 404567676bd..d0535f07282 100644
--- a/.github/workflows/application_tester.yml
+++ b/.github/workflows/application_tester.yml
@@ -70,6 +70,10 @@ jobs:
         if: runner.os == 'Linux'
         uses: pyvista/setup-headless-display-action@v1
 
+      - name: Install application tester dependencies
+        run: |
+          pip install -r ./scripts/application_tester/requirements.txt
+
       - name: Application Tester
         timeout-minutes: 5
         env: