diff --git a/build.gradle b/build.gradle
index 0a489998..e571f0e9 100644
--- a/build.gradle
+++ b/build.gradle
@@ -104,8 +104,10 @@ subprojects {
 
             beforeDeployment { MavenDeployment deployment -> signing.signPom(deployment) }
 
-            repository(url: "https://oss.sonatype.org/service/local/staging/deploy/maven2/") {
-                authentication(userName: sonatypeUsername, password: sonatypePassword)
+            if (rootProject.hasProperty('sonatypeUsername') && rootProject.hasProperty('sonatypePassword')) {
+                repository(url: "https://oss.sonatype.org/service/local/staging/deploy/maven2/") {
+                    authentication(userName: sonatypeUsername, password: sonatypePassword)
+                }
             }
 
             pom.artifactId = project.name