diff --git a/index.js b/index.js
index d4b2086..d6b2f45 100644
--- a/index.js
+++ b/index.js
@@ -72,6 +72,13 @@ module.exports = {
       "files": ["*.yaml", "*.yml"],
       "plugins": ["yaml"],
       "extends": ["plugin:yaml/recommended"]
+    },
+    // CSON files (use coffee)
+    {
+      "files": ["**/*.cson"],
+      "parser": "eslint-plugin-coffee",
+      "plugins": ["coffee", "only-warn"],
+      "extends": ["plugin:coffee/eslint-recommended"]
     }
   ]
 }
diff --git a/react.js b/react.js
index 01eb8d8..13f5bd9 100644
--- a/react.js
+++ b/react.js
@@ -73,6 +73,13 @@ module.exports = {
       "files": ["*.yaml", "*.yml"],
       "plugins": ["yaml"],
       "extends": ["plugin:yaml/recommended"]
+    },
+    // CSON files (use coffee)
+    {
+      "files": ["**/*.cson"],
+      "parser": "eslint-plugin-coffee",
+      "plugins": ["coffee", "only-warn"],
+      "extends": ["plugin:coffee/eslint-recommended"]
     }
   ],
   "settings": {
diff --git a/strict-react.js b/strict-react.js
index 996d30a..4f4f8c0 100644
--- a/strict-react.js
+++ b/strict-react.js
@@ -73,6 +73,13 @@ module.exports = {
       "files": ["*.yaml", "*.yml"],
       "plugins": ["yaml"],
       "extends": ["plugin:yaml/recommended"]
+    },
+    // CSON files (use coffee)
+    {
+      "files": ["**/*.cson"],
+      "parser": "eslint-plugin-coffee",
+      "plugins": ["coffee", "only-warn"],
+      "extends": ["plugin:coffee/eslint-recommended"]
     }
   ],
   "settings": {
diff --git a/strict.js b/strict.js
index 170aad3..3c68873 100644
--- a/strict.js
+++ b/strict.js
@@ -72,6 +72,13 @@ module.exports = {
       "files": ["*.yaml", "*.yml"],
       "plugins": ["yaml"],
       "extends": ["plugin:yaml/recommended"]
+    },
+    // CSON files (use coffee)
+    {
+      "files": ["**/*.cson"],
+      "parser": "eslint-plugin-coffee",
+      "plugins": ["coffee", "only-warn"],
+      "extends": ["plugin:coffee/eslint-recommended"]
     }
   ]
 }