diff --git a/.github/workflows/claude_issue_fixer.yaml b/.github/workflows/claude_issue_fixer.yaml
index 7c4d42d759b..74780297677 100644
--- a/.github/workflows/claude_issue_fixer.yaml
+++ b/.github/workflows/claude_issue_fixer.yaml
@@ -12,6 +12,9 @@ permissions:
 
 jobs:
     pick-and-fix:
+        # Don't run on forks.
+        if: github.repository == 'rectorphp/rector-src'
+
         runs-on: ubuntu-latest
         timeout-minutes: 30
 
diff --git a/.github/workflows/lock.yaml b/.github/workflows/lock.yaml
index e66cb879fa3..579931ce501 100644
--- a/.github/workflows/lock.yaml
+++ b/.github/workflows/lock.yaml
@@ -7,6 +7,8 @@ on:
 
 jobs:
     lock:
+        # Don't run on forks.
+        if: github.repository == 'rectorphp/rector-src'
         runs-on: ubuntu-latest
 
         steps:
diff --git a/.github/workflows/stale.yaml b/.github/workflows/stale.yaml
index 9c7e1704401..13b79a190f7 100644
--- a/.github/workflows/stale.yaml
+++ b/.github/workflows/stale.yaml
@@ -7,6 +7,8 @@ on:
 
 jobs:
     stale:
+        # Don't run on forks.
+        if: github.repository == 'rectorphp/rector-src'
         runs-on: ubuntu-latest
         steps:
             - uses: actions/stale@v10