diff --git a/keymaps/git.cson b/keymaps/git.cson
deleted file mode 100644
index f2ba12b48..000000000
--- a/keymaps/git.cson
+++ /dev/null
@@ -1,155 +0,0 @@
-'.workspace':
-  'ctrl-8': 'github:toggle-github-tab-focus'
-  'ctrl-shift-8': 'github:toggle-github-tab'
-  'ctrl-9': 'github:toggle-git-tab-focus'
-  'ctrl-shift-9': 'github:toggle-git-tab'
-  'alt-g enter': 'github:commit'
-  'alt-g f': 'github:fetch'
-  'alt-g shift-f': 'github:pull'
-  'alt-g p': 'github:push'
-  'alt-g shift-p': 'github:force-push'
-  'alt-g =': 'github:clone'
-  'alt-g r': 'github:open-reviews-tab'
-
-'atom-text-editor':
-  'alt-m 1': 'github:resolve-as-ours'
-  'alt-m 2': 'github:resolve-as-theirs'
-  'alt-m 3': 'github:resolve-as-base'
-  'alt-m enter': 'github:resolve-as-current'
-  'alt-m r': 'github:revert-current'
-
-'.platform-darwin .github-Git':
-  'cmd-enter': 'github:commit'
-'.platform-win32 .github-Git, .platform-linux .github-Git':
-  'ctrl-enter': 'github:commit'
-
-'.github-StagingView':
-  'tab': 'core:focus-next'
-  'shift-tab': 'core:focus-previous'
-  'o': 'github:jump-to-file'
-  'left': 'core:move-left'
-'.platform-darwin .github-StagingView':
-  'cmd-left': 'core:move-left'
-'.platform-linux .github-StagingView, .platform-win32 .github-StagingView':
-  'ctrl-left': 'core-move-left'
-
-'.github-CommitView button':
-  'tab': 'core:focus-next'
-  'shift-tab': 'core:focus-previous'
-
-'.platform-darwin .github-StagingView.unstaged-changes-focused':
-  'cmd-backspace': 'github:discard-changes-in-selected-files'
-'.platform-linux .github-StagingView.unstaged-changes-focused':
-  'ctrl-backspace': 'github:discard-changes-in-selected-files'
-'.platform-win32 .github-StagingView.unstaged-changes-focused':
-  # Repeated to avoid line length
-  'ctrl-backspace': 'github:discard-changes-in-selected-files'
-
-'.github-CommitView-editor atom-text-editor:not([mini])':
-  'tab': 'core:focus-next'
-  'shift-tab': 'core:focus-previous'
-'.platform-darwin .github-CommitView-editor atom-text-editor:not([mini])':
-  'cmd-enter': 'github:commit'
-'.platform-win32 .github-CommitView-editor atom-text-editor:not([mini])':
-  'ctrl-enter': 'github:commit'
-'.platform-linux .github-CommitView-editor atom-text-editor:not([mini])':
-  # Repeated to avoid line length
-  'ctrl-enter': 'github:commit'
-
-'.github-CommitView-commitPreview':
-  'left': 'github-dive'
-  'enter': 'native!'
-'.platform-darwin .github-CommitView-commitPreview':
-  'cmd-left': 'github:dive'
-'.platform-win32 .github-CommitView-commitPreview':
-  'ctrl-left': 'github:dive'
-'.platform-linux .github-CommitView-commitPreview':
-  'ctrl-left': 'github:dive'
-
-'.github-RecentCommits':
-  'left': 'github:dive'
-  'enter': 'github:dive'
-  'tab': 'core:focus-next'
-  'shift-tab': 'core:focus-previous'
-'.platform-darwin .github-RecentCommits':
-  'cmd-left': 'github:dive'
-'.platform-win32 .github-RecentCommits, .platform-linux .github-RecentCommits':
-  'ctrl-left': 'github:dive'
-
-'.github-FilePatchView atom-text-editor:not([mini])':
-  # Only support unprefixed file patch keybindings until MultiFilePatch is
-  # editable
-  '/': 'github:toggle-patch-selection-mode'
-  'backspace': 'github:discard-selected-lines'
-  'enter': 'core:confirm'
-  'right': 'github:surface'
-  'o': 'github:jump-to-file'
-'.platform-darwin .github-FilePatchView atom-text-editor:not([mini])':
-  'cmd-/': 'github:toggle-patch-selection-mode'
-  'cmd-backspace': 'github:discard-selected-lines'
-  'cmd-enter': 'core:confirm'
-  'cmd-right': 'github:surface'
-  'cmd-o': 'github:jump-to-file'
-'.platform-win32 .github-FilePatchView atom-text-editor:not([mini])':
-  'ctrl-/': 'github:toggle-patch-selection-mode'
-  'ctrl-backspace': 'github:discard-selected-lines'
-  'ctrl-enter': 'core:confirm'
-  'ctrl-right': 'github:surface'
-  'ctrl-o': 'github:jump-to-file'
-'.platform-linux .github-FilePatchView atom-text-editor:not([mini])':
-  'ctrl-/': 'github:toggle-patch-selection-mode'
-  'ctrl-backspace': 'github:discard-selected-lines'
-  'ctrl-enter': 'core:confirm'
-  'ctrl-right': 'github:surface'
-  'ctrl-o': 'github:jump-to-file'
-
-'.github-FilePatchView--hunkMode atom-text-editor:not([mini])':
-  'down': 'github:select-next-hunk'
-  'up': 'github:select-previous-hunk'
-
-'.github-Prompt-input':
-  'enter': 'core:confirm'
-  'esc': 'tool-panel:unfocus'
-
-'.github-Dialog':
-  'tab': 'core:focus-next'
-  'shift-tab': 'core:focus-previous'
-
-'.github-Dialog input':
-  'enter': 'core:confirm'
-
-'.github-CoAuthorForm input':
-  'enter': 'core:confirm'
-
-'body .github-TabbableWrapper':
-  'down': 'github:selectbox-down'
-  'up': 'github:selectbox-up'
-  'enter': 'github:selectbox-enter'
-  'tab': 'github:selectbox-tab'
-  'backspace': 'github:selectbox-backspace'
-  'pageup': 'github:selectbox-pageup'
-  'pagedown': 'github:selectbox-pagedown'
-  'end': 'github:selectbox-end'
-  'home': 'github:selectbox-home'
-  'delete': 'github:selectbox-delete'
-  'escape': 'github:selectbox-escape'
-
-'body .github-CommitView-coAuthorEditor':
-  'shift-backspace': 'github:co-author-exclude'
-
-'.platform-darwin .github-Reviews':
-  'cmd-=': 'github:more-context'
-  'cmd--': 'github:less-context'
-'.platform-win32 .github-Reviews':
-  'ctrl-=': 'github:more-context'
-  'ctrl--': 'github:less-context'
-'.platform-linux .github-Reviews':
-  'ctrl-=': 'github:more-context'
-  'ctrl--': 'github:less-context'
-
-'.platform-darwin .github-Reviews atom-text-editor':
-  'cmd-enter': 'github:submit-comment'
-'.platform-win32 .github-Reviews atom-text-editor':
-  'ctrl-enter': 'github:submit-comment'
-'.platform-linux .github-Reviews atom-text-editor':
-  'ctrl-enter': 'github:submit-comment'
diff --git a/keymaps/git.json b/keymaps/git.json
new file mode 100644
index 000000000..42aeaa170
--- /dev/null
+++ b/keymaps/git.json
@@ -0,0 +1,174 @@
+{
+  ".workspace": {
+    "ctrl-8": "github:toggle-github-tab-focus",
+    "ctrl-shift-8": "github:toggle-github-tab",
+    "ctrl-9": "github:toggle-git-tab-focus",
+    "ctrl-shift-9": "github:toggle-git-tab",
+    "alt-g enter": "github:commit",
+    "alt-g f": "github:fetch",
+    "alt-g shift-f": "github:pull",
+    "alt-g p": "github:push",
+    "alt-g shift-p": "github:force-push",
+    "alt-g =": "github:clone",
+    "alt-g r": "github:open-reviews-tab"
+  },
+  "atom-text-editor": {
+    "alt-m 1": "github:resolve-as-ours",
+    "alt-m 2": "github:resolve-as-theirs",
+    "alt-m 3": "github:resolve-as-base",
+    "alt-m enter": "github:resolve-as-current",
+    "alt-m r": "github:revert-current"
+  },
+  ".platform-darwin .github-Git": {
+    "cmd-enter": "github:commit"
+  },
+  ".platform-win32 .github-Git, .platform-linux .github-Git": {
+    "ctrl-enter": "github:commit"
+  },
+  ".github-StagingView": {
+    "tab": "core:focus-next",
+    "shift-tab": "core:focus-previous",
+    "o": "github:jump-to-file",
+    "left": "core:move-left"
+  },
+  ".platform-darwin .github-StagingView": {
+    "cmd-left": "core:move-left"
+  },
+  ".platform-linux .github-StagingView, .platform-win32 .github-StagingView": {
+    "ctrl-left": "core-move-left"
+  },
+  ".github-CommitView button": {
+    "tab": "core:focus-next",
+    "shift-tab": "core:focus-previous"
+  },
+  ".platform-darwin .github-StagingView.unstaged-changes-focused": {
+    "cmd-backspace": "github:discard-changes-in-selected-files"
+  },
+  ".platform-linux .github-StagingView.unstaged-changes-focused": {
+    "ctrl-backspace": "github:discard-changes-in-selected-files"
+  },
+  ".platform-win32 .github-StagingView.unstaged-changes-focused": {
+    "ctrl-backspace": "github:discard-changes-in-selected-files"
+  },
+  ".github-CommitView-editor atom-text-editor:not([mini])": {
+    "tab": "core:focus-next",
+    "shift-tab": "core:focus-previous"
+  },
+  ".platform-darwin .github-CommitView-editor atom-text-editor:not([mini])": {
+    "cmd-enter": "github:commit"
+  },
+  ".platform-win32 .github-CommitView-editor atom-text-editor:not([mini])": {
+    "ctrl-enter": "github:commit"
+  },
+  ".platform-linux .github-CommitView-editor atom-text-editor:not([mini])": {
+    "ctrl-enter": "github:commit"
+  },
+  ".github-CommitView-commitPreview": {
+    "left": "github-dive",
+    "enter": "native!"
+  },
+  ".platform-darwin .github-CommitView-commitPreview": {
+    "cmd-left": "github:dive"
+  },
+  ".platform-win32 .github-CommitView-commitPreview": {
+    "ctrl-left": "github:dive"
+  },
+  ".platform-linux .github-CommitView-commitPreview": {
+    "ctrl-left": "github:dive"
+  },
+  ".github-RecentCommits": {
+    "left": "github:dive",
+    "enter": "github:dive",
+    "tab": "core:focus-next",
+    "shift-tab": "core:focus-previous"
+  },
+  ".platform-darwin .github-RecentCommits": {
+    "cmd-left": "github:dive"
+  },
+  ".platform-win32 .github-RecentCommits, .platform-linux .github-RecentCommits": {
+    "ctrl-left": "github:dive"
+  },
+  ".github-FilePatchView atom-text-editor:not([mini])": {
+    "/": "github:toggle-patch-selection-mode",
+    "backspace": "github:discard-selected-lines",
+    "enter": "core:confirm",
+    "right": "github:surface",
+    "o": "github:jump-to-file"
+  },
+  ".platform-darwin .github-FilePatchView atom-text-editor:not([mini])": {
+    "cmd-/": "github:toggle-patch-selection-mode",
+    "cmd-backspace": "github:discard-selected-lines",
+    "cmd-enter": "core:confirm",
+    "cmd-right": "github:surface",
+    "cmd-o": "github:jump-to-file"
+  },
+  ".platform-win32 .github-FilePatchView atom-text-editor:not([mini])": {
+    "ctrl-/": "github:toggle-patch-selection-mode",
+    "ctrl-backspace": "github:discard-selected-lines",
+    "ctrl-enter": "core:confirm",
+    "ctrl-right": "github:surface",
+    "ctrl-o": "github:jump-to-file"
+  },
+  ".platform-linux .github-FilePatchView atom-text-editor:not([mini])": {
+    "ctrl-/": "github:toggle-patch-selection-mode",
+    "ctrl-backspace": "github:discard-selected-lines",
+    "ctrl-enter": "core:confirm",
+    "ctrl-right": "github:surface",
+    "ctrl-o": "github:jump-to-file"
+  },
+  ".github-FilePatchView--hunkMode atom-text-editor:not([mini])": {
+    "down": "github:select-next-hunk",
+    "up": "github:select-previous-hunk"
+  },
+  ".github-Prompt-input": {
+    "enter": "core:confirm",
+    "esc": "tool-panel:unfocus"
+  },
+  ".github-Dialog": {
+    "tab": "core:focus-next",
+    "shift-tab": "core:focus-previous"
+  },
+  ".github-Dialog input": {
+    "enter": "core:confirm"
+  },
+  ".github-CoAuthorForm input": {
+    "enter": "core:confirm"
+  },
+  "body .github-TabbableWrapper": {
+    "down": "github:selectbox-down",
+    "up": "github:selectbox-up",
+    "enter": "github:selectbox-enter",
+    "tab": "github:selectbox-tab",
+    "backspace": "github:selectbox-backspace",
+    "pageup": "github:selectbox-pageup",
+    "pagedown": "github:selectbox-pagedown",
+    "end": "github:selectbox-end",
+    "home": "github:selectbox-home",
+    "delete": "github:selectbox-delete",
+    "escape": "github:selectbox-escape"
+  },
+  "body .github-CommitView-coAuthorEditor": {
+    "shift-backspace": "github:co-author-exclude"
+  },
+  ".platform-darwin .github-Reviews": {
+    "cmd-=": "github:more-context",
+    "cmd--": "github:less-context"
+  },
+  ".platform-win32 .github-Reviews": {
+    "ctrl-=": "github:more-context",
+    "ctrl--": "github:less-context"
+  },
+  ".platform-linux .github-Reviews": {
+    "ctrl-=": "github:more-context",
+    "ctrl--": "github:less-context"
+  },
+  ".platform-darwin .github-Reviews atom-text-editor": {
+    "cmd-enter": "github:submit-comment"
+  },
+  ".platform-win32 .github-Reviews atom-text-editor": {
+    "ctrl-enter": "github:submit-comment"
+  },
+  ".platform-linux .github-Reviews atom-text-editor": {
+    "ctrl-enter": "github:submit-comment"
+  }
+}
diff --git a/lib/github-package.js b/lib/github-package.js
index 99aa8fb59..6dc2c10c3 100644
--- a/lib/github-package.js
+++ b/lib/github-package.js
@@ -55,7 +55,7 @@ export default class GithubPackage {
     this.styles = styles;
     this.grammars = grammars;
     this.keymaps = keymaps;
-    this.configPath = path.join(configDirPath, 'github.cson');
+    this.configPath = path.join(configDirPath, 'github.json');
     this.currentWindow = currentWindow;
 
     this.styleCalculator = new StyleCalculator(this.styles, this.config);
diff --git a/menus/git.cson b/menus/git.cson
deleted file mode 100644
index 6bccd6ee6..000000000
--- a/menus/git.cson
+++ /dev/null
@@ -1,152 +0,0 @@
-'menu': [
-  {
-    'label': 'View'
-    'submenu': [
-      {
-        'label': 'Toggle Git Tab'
-        'command': 'github:toggle-git-tab'
-      }
-      {
-        'label': 'Toggle GitHub Tab'
-        'command': 'github:toggle-github-tab'
-      }
-      {
-        'label': 'Open Reviews Tab'
-        'command': 'github:open-reviews-tab'
-      }
-    ]
-  }
-  {
-    'label': 'Packages'
-    'submenu': [
-      {
-        'label': 'GitHub',
-        'submenu': [
-          {
-            'label': 'Toggle Git Tab'
-            'command': 'github:toggle-git-tab'
-          }
-          {
-            'label': 'Toggle GitHub Tab'
-            'command': 'github:toggle-github-tab'
-          }
-          {
-            'label': 'Open Reviews Tab'
-            'command': 'github:open-reviews-tab'
-          }
-        ]
-      }
-    ]
-  }
-]
-'context-menu':
-  '.github-FilePatchListView-item': [
-    {
-      'label': 'Jump to File'
-      'command': 'github:jump-to-file'
-    }
-  ]
-  '.github-FilePatchView--staged': [
-    {
-      'type': 'separator'
-    }
-    {
-      'label': 'Jump to File'
-      'command': 'github:jump-to-file'
-      'after': ['core:confirm']
-    }
-    {
-      'label': 'Unstage Selection'
-      'command': 'core:confirm'
-      'beforeGroupContaining': ['core:undo']
-    }
-  ]
-  '.github-FilePatchView--unstaged': [
-    {
-      'type': 'separator'
-    }
-    {
-      'label': 'Jump to File'
-      'command': 'github:jump-to-file'
-      'after': ['core:confirm']
-    }
-    {
-      'label': 'Stage Selection'
-      'command': 'core:confirm'
-      'beforeGroupContaining': ['core:undo']
-    }
-    {
-      'label': 'Discard Selection'
-      'command': 'github:discard-selected-lines'
-    }
-  ]
-  '.github-DotComMarkdownHtml .issue-link': [
-    {
-      'label': 'Open in New Tab'
-      'command': 'github:open-link-in-new-tab'
-    }
-    {
-      'label': 'Open in This Tab'
-      'command': 'github:open-link-in-this-tab'
-    }
-    {
-      'label': 'Open in Browser'
-      'command': 'github:open-link-in-browser'
-    }
-  ]
-  '.github-CommitView': [
-    {
-      'type': 'separator'
-    }
-    {
-      'label': 'Toggle Expanded Commit Message Editor'
-      'command': 'github:toggle-expanded-commit-message-editor'
-    }
-  ]
-  '.item-views > atom-text-editor': [
-    {
-      'label': 'View Unstaged Changes',
-      'command': 'github:view-unstaged-changes-for-current-file'
-    }
-    {
-      'label': 'View Staged Changes',
-      'command': 'github:view-staged-changes-for-current-file'
-    }
-  ]
-  '.github-PushPull': [
-    {
-      'label': 'Fetch',
-      'command': 'github:fetch'
-    }
-    {
-      'label': 'Pull',
-      'command': 'github:pull'
-    }
-    {
-        'type': 'separator'
-    }
-    {
-        'label': 'Push',
-        'command': 'github:push'
-    }
-    {
-        'label': 'Force Push',
-        'command': 'github:force-push'
-    }
-  ]
-  '.most-recent': [
-    {
-      'label': 'Amend'
-      'command': 'github:amend-last-commit'
-    }
-  ]
-  '.github-RecentCommit': [
-    {
-      'label': 'Copy Commit SHA'
-      'command': 'github:copy-commit-sha'
-    }
-    {
-      'label': 'Copy Commit Subject'
-      'command': 'github:copy-commit-subject'
-    }
-  ]
diff --git a/menus/git.json b/menus/git.json
new file mode 100644
index 000000000..8563abff9
--- /dev/null
+++ b/menus/git.json
@@ -0,0 +1,163 @@
+{
+  "menu": [
+    {
+      "label": "View",
+      "submenu": [
+        {
+          "label": "Toggle Git Tab",
+          "command": "github:toggle-git-tab"
+        },
+        {
+          "label": "Toggle GitHub Tab",
+          "command": "github:toggle-github-tab"
+        },
+        {
+          "label": "Open Reviews Tab",
+          "command": "github:open-reviews-tab"
+        }
+      ]
+    },
+    {
+      "label": "Packages",
+      "submenu": [
+        {
+          "label": "GitHub",
+          "submenu": [
+            {
+              "label": "Toggle Git Tab",
+              "command": "github:toggle-git-tab"
+            },
+            {
+              "label": "Toggle GitHub Tab",
+              "command": "github:toggle-github-tab"
+            },
+            {
+              "label": "Open Reviews Tab",
+              "command": "github:open-reviews-tab"
+            }
+          ]
+        }
+      ]
+    }
+  ],
+  "context-menu": {
+    ".github-FilePatchListView-item": [
+      {
+        "label": "Jump to File",
+        "command": "github:jump-to-file"
+      }
+    ],
+    ".github-FilePatchView--staged": [
+      {
+        "type": "separator"
+      },
+      {
+        "label": "Jump to File",
+        "command": "github:jump-to-file",
+        "after": [
+          "core:confirm"
+        ]
+      },
+      {
+        "label": "Unstage Selection",
+        "command": "core:confirm",
+        "beforeGroupContaining": [
+          "core:undo"
+        ]
+      }
+    ],
+    ".github-FilePatchView--unstaged": [
+      {
+        "type": "separator"
+      },
+      {
+        "label": "Jump to File",
+        "command": "github:jump-to-file",
+        "after": [
+          "core:confirm"
+        ]
+      },
+      {
+        "label": "Stage Selection",
+        "command": "core:confirm",
+        "beforeGroupContaining": [
+          "core:undo"
+        ]
+      },
+      {
+        "label": "Discard Selection",
+        "command": "github:discard-selected-lines"
+      }
+    ],
+    ".github-DotComMarkdownHtml .issue-link": [
+      {
+        "label": "Open in New Tab",
+        "command": "github:open-link-in-new-tab"
+      },
+      {
+        "label": "Open in This Tab",
+        "command": "github:open-link-in-this-tab"
+      },
+      {
+        "label": "Open in Browser",
+        "command": "github:open-link-in-browser"
+      }
+    ],
+    ".github-CommitView": [
+      {
+        "type": "separator"
+      },
+      {
+        "label": "Toggle Expanded Commit Message Editor",
+        "command": "github:toggle-expanded-commit-message-editor"
+      }
+    ],
+    ".item-views > atom-text-editor": [
+      {
+        "label": "View Unstaged Changes",
+        "command": "github:view-unstaged-changes-for-current-file"
+      },
+      {
+        "label": "View Staged Changes",
+        "command": "github:view-staged-changes-for-current-file"
+      }
+    ],
+    ".github-PushPull": [
+      {
+        "label": "Fetch",
+        "command": "github:fetch"
+      },
+      {
+        "label": "Pull",
+        "command": "github:pull"
+      },
+      {
+        "type": "separator"
+      },
+      {
+        "label": "Push",
+        "command": "github:push"
+      },
+      {
+        "label": "Force Push",
+        "command": "github:force-push"
+      }
+    ],
+    ".most-recent": [
+      {
+        "label": "Amend",
+        "command": "github:amend-last-commit"
+      }
+    ],
+    ".github-RecentCommit": [
+      {
+        "label": "Copy Commit SHA",
+        "command": "github:copy-commit-sha"
+      },
+      {
+        "label": "Copy Commit Subject",
+        "command": "github:copy-commit-subject"
+      }
+    ]
+  }
+}
diff --git a/test/github-package.test.js b/test/github-package.test.js
index dc1e07b41..fbfd330e0 100644
--- a/test/github-package.test.js
+++ b/test/github-package.test.js
@@ -263,7 +263,7 @@ describe('GithubPackage', function() {
     describe('with showOnStartup and no config file', function() {
       let confFile;
       beforeEach(async function() {
-        confFile = path.join(configDirPath, 'github.cson');
+        confFile = path.join(configDirPath, 'github.json');
         await fs.remove(confFile);
 
         config.set('welcome.showOnStartup', true);
@@ -286,7 +286,7 @@ describe('GithubPackage', function() {
     describe('without showOnStartup and no config file', function() {
       let confFile;
       beforeEach(async function() {
-        confFile = path.join(configDirPath, 'github.cson');
+        confFile = path.join(configDirPath, 'github.json');
         await fs.remove(confFile);
 
         config.set('welcome.showOnStartup', false);
@@ -309,7 +309,7 @@ describe('GithubPackage', function() {
     describe('when it\'s not the first run for new projects', function() {
       let confFile;
       beforeEach(async function() {
-        confFile = path.join(configDirPath, 'github.cson');
+        confFile = path.join(configDirPath, 'github.json');
         await fs.writeFile(confFile, '', {encoding: 'utf8'});
         await githubPackage.activate();
       });
@@ -330,7 +330,7 @@ describe('GithubPackage', function() {
     describe('when it\'s not the first run for existing projects', function() {
       let confFile;
       beforeEach(async function() {
-        confFile = path.join(configDirPath, 'github.cson');
+        confFile = path.join(configDirPath, 'github.json');
         await fs.writeFile(confFile, '', {encoding: 'utf8'});
         await githubPackage.activate({newProject: false});
       });
diff --git a/test/integration/launch.test.js b/test/integration/launch.test.js
index 47f22a2e7..2b1740547 100644
--- a/test/integration/launch.test.js
+++ b/test/integration/launch.test.js
@@ -14,7 +14,7 @@ describe('integration: package initialization', function() {
 
   it('reveals the tabs on first run when the welcome package has been dismissed', async function() {
     context = await setup({
-      initConfigDir: configDirPath => fs.remove(path.join(configDirPath, 'github.cson')),
+      initConfigDir: configDirPath => fs.remove(path.join(configDirPath, 'github.json')),
       initAtomEnv: env => env.config.set('welcome.showOnStartup', false),
     });
 
@@ -29,7 +29,7 @@ describe('integration: package initialization', function() {
 
   it('renders but does not reveal the tabs on first run when the welcome package has not been dismissed', async function() {
     context = await setup({
-      initConfigDir: configDirPath => fs.remove(path.join(configDirPath, 'github.cson')),
+      initConfigDir: configDirPath => fs.remove(path.join(configDirPath, 'github.json')),
       initAtomEnv: env => env.config.set('welcome.showOnStartup', true),
     });
 
@@ -44,7 +44,7 @@ describe('integration: package initialization', function() {
 
   it('renders but does not reveal the tabs on new projects after the first run', async function() {
     context = await setup({
-      initConfigDir: configDirPath => fs.writeFile(path.join(configDirPath, 'github.cson'), '#', {encoding: 'utf8'}),
+      initConfigDir: configDirPath => fs.writeFile(path.join(configDirPath, 'github.json'), '#', {encoding: 'utf8'}),
       state: {},
     });
 
@@ -59,7 +59,7 @@ describe('integration: package initialization', function() {
 
   it('respects serialized state on existing projects after the first run', async function() {
     const nonFirstRun = {
-      initConfigDir: configDirPath => fs.writeFile(path.join(configDirPath, 'github.cson'), '#', {encoding: 'utf8'}),
+      initConfigDir: configDirPath => fs.writeFile(path.join(configDirPath, 'github.json'), '#', {encoding: 'utf8'}),
       state: {newProject: false},
     };
 
@@ -89,7 +89,7 @@ describe('integration: package initialization', function() {
     const getPaneItemURIs = ctx => ctx.atomEnv.workspace.getPaneItems().map(i => i.getURI());
 
     const prevContext = await setup({
-      initConfigDir: configDirPath => fs.writeFile(path.join(configDirPath, 'github.cson'), '#', {encoding: 'utf8'}),
+      initConfigDir: configDirPath => fs.writeFile(path.join(configDirPath, 'github.json'), '#', {encoding: 'utf8'}),
       state: {firstRun: true},
     });
 
@@ -107,7 +107,7 @@ describe('integration: package initialization', function() {
     await teardown(prevContext);
 
     context = await setup({
-      initConfigDir: configDirPath => fs.writeFile(path.join(configDirPath, 'github.cson'), '#', {encoding: 'utf8'}),
+      initConfigDir: configDirPath => fs.writeFile(path.join(configDirPath, 'github.json'), '#', {encoding: 'utf8'}),
       state: {firstRun: false},
     });
     await context.atomEnv.deserialize(prevState);
diff --git a/test/integration/open.test.js b/test/integration/open.test.js
index e2e9e4e70..493c827a1 100644
--- a/test/integration/open.test.js
+++ b/test/integration/open.test.js
@@ -9,7 +9,7 @@ describe('integration: opening and closing tabs', function() {
   beforeEach(async function() {
     context = await setup({
       initialRoots: ['three-files'],
-      initConfigDir: configDirPath => fs.writeFile(path.join(configDirPath, 'github.cson'), ''),
+      initConfigDir: configDirPath => fs.writeFile(path.join(configDirPath, 'github.json'), ''),
       state: {newProject: false},
     });