diff --git a/build/tasks/build-task.coffee b/build/tasks/build-task.coffee
index 745858502..9098e5259 100644
--- a/build/tasks/build-task.coffee
+++ b/build/tasks/build-task.coffee
@@ -91,7 +91,6 @@ module.exports = (grunt) ->
       path.join('snippets', 'node_modules', '.bin', 'pegjs')
 
       # These aren't needed since WeakMap is built-in
-      path.join('emissary', 'node_modules', 'es6-weak-map')
       path.join('property-accessors', 'node_modules', 'es6-weak-map')
 
       '.DS_Store'
diff --git a/package.json b/package.json
index c29059838..734c0e931 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,6 @@
     "coffee-script": "1.8.0",
     "color": "^0.7.3",
     "delegato": "^1",
-    "emissary": "^1.3.3",
     "event-kit": "^1.3.0",
     "first-mate": "^5.0.0",
     "fs-plus": "^2.8.0",