diff --git a/README.md b/README.md
index 138ee1b..138fe06 100644
--- a/README.md
+++ b/README.md
@@ -49,8 +49,6 @@ var app = new EmberApp({
         android: isProductionEnv,
         appleIcon: isProductionEnv,
         appleStartup: isProductionEnv,
-        coast: isProductionEnv,
-        firefox: isProductionEnv,
         windows: isProductionEnv,
         yandex: isProductionEnv
       }
diff --git a/index.js b/index.js
index 05cc59a..9abaa97 100644
--- a/index.js
+++ b/index.js
@@ -29,8 +29,6 @@ module.exports = {
           android: isProductionEnv,
           appleIcon: isProductionEnv,
           appleStartup: isProductionEnv,
-          coast: isProductionEnv,
-          firefox: isProductionEnv,
           windows: isProductionEnv,
           yandex: isProductionEnv,
         },
@@ -59,7 +57,6 @@ module.exports = {
       'android-chrome',
       'apple-touch-icon',
       'apple-touch-startup-image',
-      'coast',
       'favicon',
       'mstile',
       'firefox_app',
diff --git a/package-lock.json b/package-lock.json
index 2168141..473e025 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@gorner/ember-cli-favicon",
-  "version": "4.0.0-alpha.1",
+  "version": "4.0.0-alpha.2",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@gorner/ember-cli-favicon",
-      "version": "4.0.0-alpha.1",
+      "version": "4.0.0-alpha.2",
       "license": "MIT",
       "dependencies": {
         "@gorner/broccoli-favicon": "^4.0.0-alpha.1",
diff --git a/package.json b/package.json
index badfb13..cd0d620 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@gorner/ember-cli-favicon",
-  "version": "4.0.0-alpha.1",
+  "version": "4.0.0-alpha.2",
   "description": "Automatically build and include all the various platform / device favicon formats from a single source public/favicon.png.",
   "keywords": [
     "ember-addon",