diff --git a/build.gradle b/build.gradle
index 58b7854d..0821c8e4 100644
--- a/build.gradle
+++ b/build.gradle
@@ -130,6 +130,9 @@ subprojects {
   }
 
   signing {
+    def signingKey = findProperty("signingKey")
+    def signingPassword = findProperty("signingPassword")
+    useInMemoryPgpKeys(signingKey, signingPassword)
     sign publishing.publications.mavenJava
   }