diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index 4ac6085..0523901 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -49,6 +49,10 @@ jobs:
           - macos-15
     steps:
     - uses: actions/checkout@v4
+    - name: GPG
+      run: |
+        curl --compressed -LO https://www.swift.org/keys/all-keys.asc
+        gpg --import all-keys.asc
     - uses: swift-actions/setup-swift@d10500c1ac8822132eebbd74c48c3372c71d7ff5
       with:
         swift-version: "6.1"
diff --git a/a b/a
new file mode 100644
index 0000000..d71cb27
Binary files /dev/null and b/a differ