diff --git a/.github/workflows/require_pr_head.yml b/.github/workflows/require_pr_head.yml
index ffeda65..72f1a59 100644
--- a/.github/workflows/require_pr_head.yml
+++ b/.github/workflows/require_pr_head.yml
@@ -1,5 +1,11 @@
 name: 'Require Pull Request Head'
 
+on:
+  workflow_dispatch:
+  pull_request:
+    types: [opened]
+    branches: [master]
+
 jobs:
   require-pr-dev-to-master:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/require_tests.yml b/.github/workflows/require_tests.yml
index 3760a1f..c23382b 100644
--- a/.github/workflows/require_tests.yml
+++ b/.github/workflows/require_tests.yml
@@ -1,5 +1,10 @@
 name: 'Require Python Tests to Run OK'
 
+on:
+  workflow_dispatch:
+  pull_request:
+    types: [opened]
+
 jobs:
   require-tests-ok:
     runs-on: ubuntu-latest