diff --git a/payapi-spec/build.gradle b/payapi-spec/build.gradle
index c4bc7c9..57f22e8 100644
--- a/payapi-spec/build.gradle
+++ b/payapi-spec/build.gradle
@@ -34,6 +34,10 @@
             interfaceOnly           : "true",
             generateAliasAsModel    : "false"
     ]
+
+    systemProperties = [
+            "hideGenerationTimestamp": true
+    ]
 }
 
 task copyApiSrc(type: Copy) {