diff --git a/Sync.podspec b/Sync.podspec
index d87bb4f7..dff57b03 100755
--- a/Sync.podspec
+++ b/Sync.podspec
@@ -28,5 +28,5 @@ s.dependency 'DATAFilter', '~> 0.9.1'
 s.dependency 'DATAStack', '~> 4.0.3'
 s.dependency 'NSDictionary-ANDYSafeValue', '~> 0.3.1'
 s.dependency 'NSEntityDescription-SYNCPrimaryKey', '~> 0.1.1'
-s.dependency 'NSManagedObject-HYPPropertyMapper', '~> 3.3.3'
+s.dependency 'NSManagedObject-HYPPropertyMapper', '~> 3.4.0'
 end