diff --git a/packages/react-navigation/examples/NavigationPlayground/js/App.js b/packages/react-navigation/examples/NavigationPlayground/js/App.js
index 1638ed3a..6d835d22 100644
--- a/packages/react-navigation/examples/NavigationPlayground/js/App.js
+++ b/packages/react-navigation/examples/NavigationPlayground/js/App.js
@@ -48,6 +48,8 @@ import TabsWithNavigationFocus from './TabsWithNavigationFocus';
 import TabsWithNavigationEvents from './TabsWithNavigationEvents';
 import KeyboardHandlingExample from './KeyboardHandlingExample';
 
+process.env.REACT_NAV_LOGGING = true;
+
 const ExampleInfo = {
   SimpleStack: {
     name: 'Stack Example',
diff --git a/packages/react-navigation/examples/NavigationPlayground/package.json b/packages/react-navigation/examples/NavigationPlayground/package.json
index 9ca7ebb1..bd9cdf35 100644
--- a/packages/react-navigation/examples/NavigationPlayground/package.json
+++ b/packages/react-navigation/examples/NavigationPlayground/package.json
@@ -10,7 +10,7 @@
     "test": "flow"
   },
   "dependencies": {
-    "@react-navigation/native": "^3.0.0-alpha.8",
+    "@react-navigation/native": "^3.0.0-alpha.9",
     "expo": "^30.0.0",
     "hoist-non-react-statics": "^3.0.1",
     "invariant": "^2.2.4",
diff --git a/packages/react-navigation/examples/NavigationPlayground/yarn.lock b/packages/react-navigation/examples/NavigationPlayground/yarn.lock
index 27b29838..5f758473 100644
--- a/packages/react-navigation/examples/NavigationPlayground/yarn.lock
+++ b/packages/react-navigation/examples/NavigationPlayground/yarn.lock
@@ -516,10 +516,10 @@
     pouchdb-collections "^1.0.1"
     tiny-queue "^0.2.1"
 
-"@react-navigation/core@^3.0.0-alpha.13":
-  version "3.0.0-alpha.13"
-  resolved "https://registry.yarnpkg.com/@react-navigation/core/-/core-3.0.0-alpha.13.tgz#7c0458e1054ebd24b3e4925b127e825503483d9d"
-  integrity sha512-3GDiItUJXHJUst60iW1t2J7BVtF+ZTCgwWvpqBHNT0OG0Dm8B1nLUjRLdofv/BvyXIvuGX//A3qpN8jRhSbnhQ==
+"@react-navigation/core@^3.0.0-alpha.15":
+  version "3.0.0-alpha.15"
+  resolved "https://registry.yarnpkg.com/@react-navigation/core/-/core-3.0.0-alpha.15.tgz#86be3b4591e4421d889e9946490cec387ab322f0"
+  integrity sha512-tSWQIPYWrWdvNpfZ3FF3YP74P2sDxUqxt7Y0EC5ET6Xin/QTPbp6Dja9TSir7ki1obWW+bp5jWvd2gMYHyJ7IQ==
   dependencies:
     create-react-context "^0.2.3"
     hoist-non-react-statics "^3.0.1"
@@ -5647,10 +5647,10 @@ react-navigation-material-bottom-tabs@1.0.0-alpha.2:
     prop-types "^15.6.0"
     react-navigation-tabs "1.0.0-alpha.4"
 
-react-navigation-stack@1.0.0-alpha.23:
-  version "1.0.0-alpha.23"
-  resolved "https://registry.yarnpkg.com/react-navigation-stack/-/react-navigation-stack-1.0.0-alpha.23.tgz#515e940b5e1f864a73a80be43cafae767f9ed3f5"
-  integrity sha512-EhM9SIlWYeCC1f1Ju53AUVfTyY6HLJwuGMVcb/VeVT513fPgOijD4HlmOcAngkKNVMNOfhPuFgvngg9TM4vYOA==
+react-navigation-stack@1.0.0-alpha.25:
+  version "1.0.0-alpha.25"
+  resolved "https://registry.yarnpkg.com/react-navigation-stack/-/react-navigation-stack-1.0.0-alpha.25.tgz#61ecd32b4f20e7f00832f141d0913eaa06dfc26e"
+  integrity sha512-LkFsovPmqy0Z1I4EWERVk0jz90Fh2AbnMf0JFStnMNeWsATL3nXmi7dKLPMNsdsn0SjvmNiwe+S72VMMLZ87wA==
 
 react-navigation-tabs@1.0.0-alpha.4:
   version "1.0.0-alpha.4"
diff --git a/packages/react-navigation/package.json b/packages/react-navigation/package.json
index 8e07b3ce..a23e571d 100644
--- a/packages/react-navigation/package.json
+++ b/packages/react-navigation/package.json
@@ -34,10 +34,10 @@
     "react-native": "*"
   },
   "dependencies": {
-    "@react-navigation/core": "^3.0.0-alpha.13",
+    "@react-navigation/core": "^3.0.0-alpha.15",
     "@react-navigation/native": "^3.0.0-alpha.9",
     "react-navigation-drawer": "1.0.0-alpha.5",
-    "react-navigation-stack": "1.0.0-alpha.24",
+    "react-navigation-stack": "1.0.0-alpha.25",
     "react-navigation-tabs": "1.0.0-alpha.4"
   },
   "devDependencies": {
diff --git a/packages/react-navigation/src/react-navigation.js b/packages/react-navigation/src/react-navigation.js
index c9c1fc2e..7a9b09ac 100644
--- a/packages/react-navigation/src/react-navigation.js
+++ b/packages/react-navigation/src/react-navigation.js
@@ -46,6 +46,9 @@ module.exports = {
   get getNavigation() {
     return require('@react-navigation/core').getNavigation;
   },
+  get NavigationContext() {
+    return require('@react-navigation/core').NavigationContext;
+  },
   get NavigationProvider() {
     return require('@react-navigation/core').NavigationProvider;
   },
diff --git a/packages/react-navigation/yarn.lock b/packages/react-navigation/yarn.lock
index 615724f0..41e9768c 100644
--- a/packages/react-navigation/yarn.lock
+++ b/packages/react-navigation/yarn.lock
@@ -46,10 +46,10 @@
     universal-user-agent "^2.0.0"
     url-template "^2.0.8"
 
-"@react-navigation/core@^3.0.0-alpha.13":
-  version "3.0.0-alpha.13"
-  resolved "https://registry.yarnpkg.com/@react-navigation/core/-/core-3.0.0-alpha.13.tgz#7c0458e1054ebd24b3e4925b127e825503483d9d"
-  integrity sha512-3GDiItUJXHJUst60iW1t2J7BVtF+ZTCgwWvpqBHNT0OG0Dm8B1nLUjRLdofv/BvyXIvuGX//A3qpN8jRhSbnhQ==
+"@react-navigation/core@^3.0.0-alpha.15":
+  version "3.0.0-alpha.15"
+  resolved "https://registry.yarnpkg.com/@react-navigation/core/-/core-3.0.0-alpha.15.tgz#86be3b4591e4421d889e9946490cec387ab322f0"
+  integrity sha512-tSWQIPYWrWdvNpfZ3FF3YP74P2sDxUqxt7Y0EC5ET6Xin/QTPbp6Dja9TSir7ki1obWW+bp5jWvd2gMYHyJ7IQ==
   dependencies:
     create-react-context "^0.2.3"
     hoist-non-react-statics "^3.0.1"
@@ -6700,10 +6700,10 @@ react-navigation-drawer@1.0.0-alpha.5:
   resolved "https://registry.yarnpkg.com/react-navigation-drawer/-/react-navigation-drawer-1.0.0-alpha.5.tgz#1ef75b5e9c7ae9c3011427a493bcc2714ea2c072"
   integrity sha512-AD1AyqGpUb4coUw3KpJ7i/2RfTiE5RJfTDHVeBkpqc2wsXJ4PaWYGoxfvfWP910hJy8txYTnWWUinWmiD7aBgA==
 
-react-navigation-stack@1.0.0-alpha.24:
-  version "1.0.0-alpha.24"
-  resolved "https://registry.yarnpkg.com/react-navigation-stack/-/react-navigation-stack-1.0.0-alpha.24.tgz#55bcb6913bd2059c361133f45153548d0628d8be"
-  integrity sha512-XxVDRKYJe9uxfu5VwISVQmaw++w+MaUg8e+h4SEeRudz4CxIFl+JFCT9pZLSOH/8ozAAo1HpwuGIEmuBam8NVw==
+react-navigation-stack@1.0.0-alpha.25:
+  version "1.0.0-alpha.25"
+  resolved "https://registry.yarnpkg.com/react-navigation-stack/-/react-navigation-stack-1.0.0-alpha.25.tgz#61ecd32b4f20e7f00832f141d0913eaa06dfc26e"
+  integrity sha512-LkFsovPmqy0Z1I4EWERVk0jz90Fh2AbnMf0JFStnMNeWsATL3nXmi7dKLPMNsdsn0SjvmNiwe+S72VMMLZ87wA==
 
 react-navigation-tabs@1.0.0-alpha.4:
   version "1.0.0-alpha.4"