diff --git a/.github/workflows/watchman_tests.yml b/.github/workflows/watchman_tests.yml
index 663b62ad3..99f0caa01 100644
--- a/.github/workflows/watchman_tests.yml
+++ b/.github/workflows/watchman_tests.yml
@@ -50,7 +50,7 @@ jobs:
           path: requirements.txt
 
       - name: Unit tests
-        if: ${{ runner.os == 'Linux' }} # WhatsOpt tests will be run only on Linux to avoid unneeded traffic
+        if: ${{ runner.os == 'Linux' && github.event.schedule == '12 4 * * *' }} # WhatsOpt tests will be run only on Linux on scheduled runs to avoid unneeded traffic
         env:
           RUN_WEB_REQUESTS: 'True'
         run: pytest --no-cov src