diff --git a/CHANGELOG.md b/CHANGELOG.md
index cc994db..84caf47 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+## [2.12.1] - [2018-08-23](https://github.com/react-navigation/react-navigation/releases/tag/2.12.1)
+
+### Fixed
+- Fix crash on react-native@>=0.56 described in https://github.com/react-navigation/react-navigation/issues/4886
+
 ## [2.12.0] - [2018-08-22](https://github.com/react-navigation/react-navigation/releases/tag/2.12.0)
 
 ### Changed
@@ -148,8 +153,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Changed
 - Improved examples
 
-[Unreleased]: https://github.com/react-navigation/react-navigation/compare/2.12.0...HEAD
-[2.12.0]: https://github.com/react-navigation/react-navigation/compare/2.11.1...2.11.2
+[Unreleased]: https://github.com/react-navigation/react-navigation/compare/2.12.1...HEAD
+[2.12.1]: https://github.com/react-navigation/react-navigation/compare/2.12.0...2.12.1
+[2.12.0]: https://github.com/react-navigation/react-navigation/compare/2.11.2...2.12.0
 [2.11.2]: https://github.com/react-navigation/react-navigation/compare/2.11.1...2.11.2
 [2.11.1]: https://github.com/react-navigation/react-navigation/compare/2.11.0...2.11.1
 [2.11.0]: https://github.com/react-navigation/react-navigation/compare/2.10.0...2.11.0
diff --git a/examples/NavigationPlayground/yarn.lock b/examples/NavigationPlayground/yarn.lock
index 2dbac73..6e737a4 100644
--- a/examples/NavigationPlayground/yarn.lock
+++ b/examples/NavigationPlayground/yarn.lock
@@ -4480,9 +4480,9 @@ react-native-safe-area-view@^0.7.0:
   dependencies:
     hoist-non-react-statics "^2.3.1"
 
-react-native-safe-area-view@^0.8.0:
-  version "0.8.0"
-  resolved "https://registry.yarnpkg.com/react-native-safe-area-view/-/react-native-safe-area-view-0.8.0.tgz#22d78cb8e8658d04a10cd53c1546e0bc86cb7aea"
+react-native-safe-area-view@^0.9.0:
+  version "0.9.0"
+  resolved "https://registry.yarnpkg.com/react-native-safe-area-view/-/react-native-safe-area-view-0.9.0.tgz#10ece2ecac70e7005a5b0b3f06c8833060e6d21f"
   dependencies:
     hoist-non-react-statics "^2.3.1"
 
@@ -4590,9 +4590,9 @@ react-navigation-deprecated-tab-navigator@1.3.0:
   dependencies:
     react-native-tab-view "^0.0.77"
 
-react-navigation-drawer@0.4.3:
-  version "0.4.3"
-  resolved "https://registry.yarnpkg.com/react-navigation-drawer/-/react-navigation-drawer-0.4.3.tgz#c04c94e2429b7e724801af05bd0a93a79cb27f71"
+react-navigation-drawer@0.5.0:
+  version "0.5.0"
+  resolved "https://registry.yarnpkg.com/react-navigation-drawer/-/react-navigation-drawer-0.5.0.tgz#d91b6a6ec65c34ba78c00f814b1e6508922cc9ec"
   dependencies:
     react-native-drawer-layout-polyfill "^1.3.2"
 
@@ -4611,9 +4611,13 @@ react-navigation-material-bottom-tabs@^0.3.0:
     react-native-paper "2.0.0-alpha.4"
     react-navigation-tabs "^0.4.0"
 
-react-navigation-tabs@0.5.1, react-navigation-tabs@^0.5.1:
-  version "0.5.1"
-  resolved "https://registry.yarnpkg.com/react-navigation-tabs/-/react-navigation-tabs-0.5.1.tgz#ed33bce3a3e21b92646700de25bd94b8fc570371"
+react-navigation-stack@0.2.3:
+  version "0.2.3"
+  resolved "https://registry.yarnpkg.com/react-navigation-stack/-/react-navigation-stack-0.2.3.tgz#9d1e2524aa1d178302c938948b8ece49d713f12b"
+
+react-navigation-tabs@0.6.0:
+  version "0.6.0"
+  resolved "https://registry.yarnpkg.com/react-navigation-tabs/-/react-navigation-tabs-0.6.0.tgz#2f526194f4360e56c2702e736887449acc2080dc"
   dependencies:
     hoist-non-react-statics "^2.5.0"
     prop-types "^15.6.1"
@@ -4631,6 +4635,16 @@ react-navigation-tabs@^0.4.0:
     react-native-safe-area-view "^0.7.0"
     react-native-tab-view "^1.0.0"
 
+react-navigation-tabs@^0.5.1:
+  version "0.5.1"
+  resolved "https://registry.yarnpkg.com/react-navigation-tabs/-/react-navigation-tabs-0.5.1.tgz#ed33bce3a3e21b92646700de25bd94b8fc570371"
+  dependencies:
+    hoist-non-react-statics "^2.5.0"
+    prop-types "^15.6.1"
+    react-lifecycles-compat "^3.0.4"
+    react-native-safe-area-view "^0.7.0"
+    react-native-tab-view "^1.0.0"
+
 "react-navigation@link:../..":
   version "0.0.0"
   uid ""
diff --git a/package.json b/package.json
index 6535eaf..57b327b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-navigation",
-  "version": "2.12.0",
+  "version": "2.12.1",
   "description": "Routing and navigation for your React Native apps",
   "main": "src/react-navigation.js",
   "repository": {
@@ -39,7 +39,7 @@
     "react-native-safe-area-view": "^0.9.0",
     "react-navigation-deprecated-tab-navigator": "1.3.0",
     "react-navigation-drawer": "0.5.0",
-    "react-navigation-stack": "0.2.1",
+    "react-navigation-stack": "0.2.3",
     "react-navigation-tabs": "0.6.0"
   },
   "devDependencies": {
diff --git a/yarn.lock b/yarn.lock
index dd312df..8aab239 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4848,9 +4848,9 @@ react-navigation-drawer@0.5.0:
   dependencies:
     react-native-drawer-layout-polyfill "^1.3.2"
 
-react-navigation-stack@0.2.1:
-  version "0.2.1"
-  resolved "https://registry.yarnpkg.com/react-navigation-stack/-/react-navigation-stack-0.2.1.tgz#30529f48129a95a456084a58b3acb2a378dc9408"
+react-navigation-stack@0.2.3:
+  version "0.2.3"
+  resolved "https://registry.yarnpkg.com/react-navigation-stack/-/react-navigation-stack-0.2.3.tgz#9d1e2524aa1d178302c938948b8ece49d713f12b"
 
 react-navigation-tabs@0.6.0:
   version "0.6.0"