diff --git a/.github/workflows/prober-github.yml b/.github/workflows/prober-github.yml
index ce57f21..ea0b10f 100644
--- a/.github/workflows/prober-github.yml
+++ b/.github/workflows/prober-github.yml
@@ -8,6 +8,7 @@ on:
 
 jobs:
   prober:
+    if: github.repository_owner == 'actions'
     permissions:
       attestations: write
       id-token: write
diff --git a/.github/workflows/prober-public-good.yml b/.github/workflows/prober-public-good.yml
index 56d8690..d8efefd 100644
--- a/.github/workflows/prober-public-good.yml
+++ b/.github/workflows/prober-public-good.yml
@@ -8,6 +8,7 @@ on:
 
 jobs:
   prober:
+    if: github.repository_owner == 'actions'
     permissions:
       attestations: write
       id-token: write