diff --git a/build.gradle b/build.gradle
index d98a28a..af196fe 100644
--- a/build.gradle
+++ b/build.gradle
@@ -100,12 +100,14 @@ uploadArchives {
             }
         }
 
-        repository(url: "https://oss.sonatype.org/service/local/staging/deploy/maven2/") {
-            authentication userName: ossrhUsername, password: ossrhPassword
-        }
+        if (project.hasProperty('ossrhUsername')) {
+            repository(url: "https://oss.sonatype.org/service/local/staging/deploy/maven2/") {
+                authentication userName: ossrhUsername, password: ossrhPassword
+            }
 
-        snapshotRepository(url: "https://oss.sonatype.org/content/repositories/snapshots/") {
-            authentication userName: ossrhUsername, password: ossrhPassword
+            snapshotRepository(url: "https://oss.sonatype.org/content/repositories/snapshots/") {
+                authentication userName: ossrhUsername, password: ossrhPassword
+            }
         }
 
         beforeDeployment {