diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e5be650..68751ad 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -90,7 +90,8 @@ jobs:
                   --info signMavenJavaPublication
       env:
         GPG_SIGNING_KEY_PASSWORD: ${{ secrets.GPG_SIGNING_KEY_PASSWORD }}
-        GPG_SIGNING_KEY: ${{ secrets.GPG_SIGNING_KEY }}
+        GPG_SIGNING_KEY: |
+          ${{ secrets.GPG_SIGNING_KEY }}
         GPG_KEY_ID: ${{ secrets.GPG_KEY_ID }}
 
     - name: Upload build artifacts