diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 6a6bf21..924169a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -136,12 +136,14 @@ jobs:
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v6
       - name: Publish with Gradle
-        run: ./gradlew build publish -x test
+        run: |
+          export ORG_GRADLE_PROJECT_signingKey=$(echo "$GPG_SIGNING_KEY_BASE64" | base64 -d)
+          ./gradlew build publish -x test
         env:
           ORG_GRADLE_PROJECT_ossrhUsername: ${{ secrets.OSSRH_USERNAME }}
           ORG_GRADLE_PROJECT_ossrhPassword: ${{ secrets.OSSRH_TOKEN }}
           ORG_GRADLE_PROJECT_signingPassword: ${{ secrets.GPG_SIGNING_PASSPHRASE }}
-          ORG_GRADLE_PROJECT_signingKey: ${{ secrets.GPG_SIGNING_KEY }}
+          GPG_SIGNING_KEY_BASE64: ${{ secrets.GPG_SIGNING_KEY_BASE64 }}
           ORG_GRADLE_PROJECT_signingKeyId: ${{ secrets.GPG_SIGNING_KEY_ID }}
       - name: Setup .netrc file
         uses: extractions/netrc@v3