diff --git a/.github/workflows/private-vso-build.yml b/.github/workflows/private-vso-build.yml
index 0e54dc2494..0847ccf133 100644
--- a/.github/workflows/private-vso-build.yml
+++ b/.github/workflows/private-vso-build.yml
@@ -3,6 +3,8 @@ on:
   workflow_dispatch:
   pull_request_target:
     types: [synchronize, opened, reopened, ready_for_review]
+    branches:
+      - 'main'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref }}
diff --git a/.github/workflows/unsafe-reviewers.yml b/.github/workflows/unsafe-reviewers.yml
index 4397493238..7715102f64 100644
--- a/.github/workflows/unsafe-reviewers.yml
+++ b/.github/workflows/unsafe-reviewers.yml
@@ -3,6 +3,8 @@ on:
   workflow_dispatch:
   pull_request_target:
     types: [opened, reopened, synchronize]
+    branches:
+      - 'main'
 
 # https://docs.github.com/en/actions/using-jobs/assigning-permissions-to-jobs
 permissions: