diff --git a/.github/workflows/tag.yml b/.github/workflows/tag.yml
index e4fd3c7..50bd7f7 100644
--- a/.github/workflows/tag.yml
+++ b/.github/workflows/tag.yml
@@ -24,4 +24,4 @@ jobs:
         run: ./gradlew build
       - run: echo "Build status report=${{ job.status }}."
       - name: Deploy to Sonatype / Maven Central
-        run: ./gradlew -PcentralPortalToken='${{ secrets.CENTRAL_PORTAL_TOKEN }}' -PcentralPortalPassword='${{ secrets.CENTRAL_PORTAL_PASSWORD }}' -PsigningKeyId='${{ secrets.SIGNING_KEY_ID }}' -PsigningKeyPassword='${{ secrets.SIGNING_KEY_PASSWORD }}' -PsigningKey='${{ secrets.SIGNING_KEY }}' publishAllPublicationsToCentralPortal
\ No newline at end of file
+        run: ./gradlew -PcentralPortalToken='${{ secrets.CENTRAL_PORTAL_TOKEN }}' -PcentralPortalPassword='${{ secrets.CENTRAL_PORTAL_PASSWORD }}' -Psigning.inMemoryKeyId='${{ secrets.SIGNING_KEY_ID }}' -Psigning.inMemoryKeyPassword='${{ secrets.SIGNING_KEY_PASSWORD }}' -Psigning.inMemoryKey='${{ secrets.SIGNING_KEY_IN_MEMORY }}' publishAllPublicationsToCentralPortal
\ No newline at end of file
diff --git a/icmp-lib/build.gradle.kts b/icmp-lib/build.gradle.kts
index 7cf67bf..9f1324e 100644
--- a/icmp-lib/build.gradle.kts
+++ b/icmp-lib/build.gradle.kts
@@ -99,4 +99,6 @@ mavenPublishing {
             developerConnection = "scm:git:ssh://git@github.com/compscidr/icmp-android.git"
         }
     }
+
+    signAllPublications()
 }
\ No newline at end of file