diff --git a/CHANGELOG.md b/CHANGELOG.md
index b04835f4..b45830a5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
 - Added support for `DroppedFile`, `HoveredFile`, and `HoveredFileCancelled` to X11 backend.
 - **Breaking:** `unix::WindowExt` no longer returns pointers for things that aren't actually pointers; `get_xlib_window` now returns `Option<std::os::raw::c_ulong>` and `get_xlib_screen_id` returns `Option<std::os::raw::c_int>`. Additionally, methods that previously returned `libc::c_void` have been changed to return `std::os::raw::c_void`, which are not interchangeable types, so users wanting the former will need to explicitly cast.
 - Added `set_decorations` method to `Window` to allow decorations to be toggled after the window is built. Presently only implemented on X11.
+- **Breaking:** Update cocoa and core-graphics. Raises the minimum supported version of rust to 1.20 on macOS due to usage of associated constants.
 - Added `modifiers` field to `MouseInput`, `MouseWheel`, and `CursorMoved` events to track the modifiers state (`ModifiersState`).
 
 # Version 0.9.0 (2017-12-01)
diff --git a/Cargo.toml b/Cargo.toml
index af6bc3bb..68bbc692 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,7 +11,7 @@ documentation = "https://docs.rs/winit"
 categories = ["gui"]
 
 [dependencies]
-lazy_static = "0.2.2"
+lazy_static = "1"
 libc = "0.2"
 
 [target.'cfg(target_os = "android")'.dependencies.android_glue]
@@ -22,9 +22,9 @@ objc = "0.2"
 
 [target.'cfg(target_os = "macos")'.dependencies]
 objc = "0.2"
-cocoa = "0.11"
+cocoa = "0.13"
 core-foundation = "0.4"
-core-graphics = "0.10"
+core-graphics = "0.12"
 
 [target.'cfg(target_os = "windows")'.dependencies.winapi]
 version = "0.3"