diff --git a/.github/workflows/prerelease.yml b/.github/workflows/prerelease.yml
index 8e2eaea..ab8c93c 100644
--- a/.github/workflows/prerelease.yml
+++ b/.github/workflows/prerelease.yml
@@ -10,6 +10,9 @@ jobs:
   build:
     runs-on: ubuntu-latest
     environment: polymart_deploy
+    if: |
+      !github.event.pull_request.head.repo.fork &&
+      !contains(github.event.head_commit.message, '[nolist]')
     steps:
       - uses: actions/checkout@v2
       - name: Set up JDK 11
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 9c97f66..8ec3367 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -10,6 +10,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     environment: polymart_deploy
+    if: ${{ !github.event.pull_request.head.repo.fork }}
     steps:
       - uses: actions/checkout@v2
       - name: Set up JDK 11