diff --git a/.github/workflows/daily.yml b/.github/workflows/daily.yml
index 469fdd94da28..6bcc621421d4 100644
--- a/.github/workflows/daily.yml
+++ b/.github/workflows/daily.yml
@@ -4,6 +4,10 @@ on:
   workflow_dispatch:
   schedule:
     - cron: "0 0 * * *"
+  pull_request:
+    paths:
+      - 'requirements-tests.txt'
+      - '.github/workflows/daily.yml'
 
 # Please keep the permissions minimal, as stubtest runs arbitrary code from pypi.
 permissions:
diff --git a/.github/workflows/stubtest_stdlib.yml b/.github/workflows/stubtest_stdlib.yml
index 13a696ca75ed..f0f020af0c52 100644
--- a/.github/workflows/stubtest_stdlib.yml
+++ b/.github/workflows/stubtest_stdlib.yml
@@ -10,7 +10,7 @@ on:
       - 'stdlib/**'
       - '.github/workflows/stubtest_stdlib.yml'
       - 'tests/**'
-      - 'requirements-tests.txt'
+      # When requirements.txt changes, we run `daily.yml`, which includes stdlib stubtest
 
 permissions:
   contents: read