diff --git a/Jenkinsfile b/Jenkinsfile
index 3ac52cd..eee3e7c 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -92,7 +92,7 @@ pipeline {
                         def propName = mod == 'sdk-bugcollect-plugin' ? 'SDK_BUGCOLLECT_VERSION' : "SDK_${mod.replace('sdk-', '').toUpperCase()}_VERSION"
                         [mod, propName]
                     }
-                    def uniquePropNames = propNameByModule.values().toUnique()
+                    def uniquePropNames = propNameByModule.values() as Set
 
                     def versionArgs = []
                     def publishedVersions = []