diff --git a/Cargo.toml b/Cargo.toml
index 757edb36..f23f1c26 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "winit"
-version = "0.5.7"
+version = "0.5.8"
 authors = ["The winit contributors, Pierre Krieger <pierre.krieger1708@gmail.com>"]
 description = "Cross-platform window creation library."
 keywords = ["windowing"]
@@ -26,7 +26,7 @@ objc = "0.2"
 [target.'cfg(target_os = "macos")'.dependencies]
 objc = "0.2"
 cgl = "0.1"
-cocoa = "0.5.2"
+cocoa = "=0.5.2"
 core-foundation = "0"
 core-graphics = "0.4"