diff --git a/.github/workflows/scheduled.yml b/.github/workflows/scheduled.yml
index 596c5d7449..3eb36d6d93 100644
--- a/.github/workflows/scheduled.yml
+++ b/.github/workflows/scheduled.yml
@@ -11,6 +11,7 @@ on:
 
 jobs:
   get-scarb-versions:
+    if: "! github.event.pull_request.head.repo.fork"
     name: Get Scarb versions
     outputs:
       versions: ${{ steps.get_versions.outputs.versions }}
@@ -30,6 +31,7 @@ jobs:
           echo "versions=[${scarb_versions[@]}]" >> "$GITHUB_OUTPUT"
 
   test-forge-unit-and-integration:
+    if: "! github.event.pull_request.head.repo.fork"
     runs-on: ubuntu-latest
     needs: get-scarb-versions
     strategy:
@@ -50,6 +52,7 @@ jobs:
       - run: cargo test --release -p forge integration
 
   test-forge-e2e:
+    if: "! github.event.pull_request.head.repo.fork"
     runs-on: ubuntu-latest
     needs: get-scarb-versions
     strategy:
@@ -89,6 +92,7 @@ jobs:
       - run: cargo test --release -p forge e2e
 
   test-cast:
+    if: "! github.event.pull_request.head.repo.fork"
     runs-on: ubuntu-latest
     needs: get-scarb-versions
     strategy: