diff --git a/package.json b/package.json
index 22b46613..ae63dd07 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "broccoli-asset-rev": "3.0.0",
     "broccoli-funnel": "2.0.2",
     "broccoli-merge-trees": "3.0.2",
-    "broccoli-stew": "2.1.0",
+    "broccoli-stew": "3.0.0",
     "ember-cli-app-version": "3.2.0",
     "ember-cli-dependency-checker": "3.2.0",
     "ember-cli-eslint": "5.1.0",
diff --git a/yarn.lock b/yarn.lock
index b64322c4..ffa090e1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2900,7 +2900,7 @@ broccoli-persistent-filter@^1.1.6, broccoli-persistent-filter@^1.4.3:
     symlink-or-copy "^1.0.1"
     walk-sync "^0.3.1"
 
-broccoli-persistent-filter@^2.1.0, broccoli-persistent-filter@^2.1.1, broccoli-persistent-filter@^2.2.1, broccoli-persistent-filter@^2.3.1:
+broccoli-persistent-filter@^2.1.0, broccoli-persistent-filter@^2.1.1, broccoli-persistent-filter@^2.2.1, broccoli-persistent-filter@^2.3.0, broccoli-persistent-filter@^2.3.1:
   version "2.3.1"
   resolved "https://registry.yarnpkg.com/broccoli-persistent-filter/-/broccoli-persistent-filter-2.3.1.tgz#4a052e0e0868b344c3a2977e35a3d497aa9eca72"
   integrity sha512-hVsmIgCDrl2NFM+3Gs4Cr2TA6UPaIZip99hN8mtkaUPgM8UeVnCbxelCvBjUBHo0oaaqP5jzqqnRVvb568Yu5g==
@@ -2940,6 +2940,16 @@ broccoli-plugin@^1.0.0, broccoli-plugin@^1.1.0, broccoli-plugin@^1.2.0, broccoli
     rimraf "^2.3.4"
     symlink-or-copy "^1.1.8"
 
+broccoli-plugin@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/broccoli-plugin/-/broccoli-plugin-2.1.0.tgz#2fab6c578219cfcc64f773e9616073313fc8b334"
+  integrity sha512-ElE4caljW4slapyEhSD9jU9Uayc8SoSABWdmY9SqbV8DHNxU6xg1jJsPcMm+cXOvggR3+G+OXAYQeFjWVnznaw==
+  dependencies:
+    promise-map-series "^0.2.1"
+    quick-temp "^0.1.3"
+    rimraf "^2.3.4"
+    symlink-or-copy "^1.1.8"
+
 broccoli-slow-trees@^3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/broccoli-slow-trees/-/broccoli-slow-trees-3.0.1.tgz#9bf2a9e2f8eb3ed3a3f2abdde988da437ccdc9b4"
@@ -2963,25 +2973,25 @@ broccoli-sri-hash@^2.1.0:
     sri-toolbox "^0.2.0"
     symlink-or-copy "^1.0.1"
 
-broccoli-stew@2.1.0, broccoli-stew@^2.1.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/broccoli-stew/-/broccoli-stew-2.1.0.tgz#ba73add17fda3b9b01d8cfb343a8b613b7136a0a"
-  integrity sha512-tgCkuTWYl4uf7k7ib2D79KFEj2hCgnTUNPMnrCoAha0/4bywcNccmaZVWtL9Ex37yX5h5eAbnM/ak2ULoMwSSw==
+broccoli-stew@3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/broccoli-stew/-/broccoli-stew-3.0.0.tgz#fd1d19d162ad9490b42e5c563b78c26eb1e80b95"
+  integrity sha512-NXfi+Vas24n3Ivo21GvENTI55qxKu7OwKRnCLWXld8MiLiQKQlWIq28eoARaFj0lTUFwUa4jKZeA7fW9PiWQeg==
   dependencies:
     broccoli-debug "^0.6.5"
     broccoli-funnel "^2.0.0"
     broccoli-merge-trees "^3.0.1"
-    broccoli-persistent-filter "^2.1.1"
-    broccoli-plugin "^1.3.1"
+    broccoli-persistent-filter "^2.3.0"
+    broccoli-plugin "^2.1.0"
     chalk "^2.4.1"
-    debug "^3.1.0"
+    debug "^4.1.1"
     ensure-posix-path "^1.0.1"
-    fs-extra "^6.0.1"
+    fs-extra "^8.0.1"
     minimatch "^3.0.4"
-    resolve "^1.8.1"
-    rsvp "^4.8.4"
+    resolve "^1.11.1"
+    rsvp "^4.8.5"
     symlink-or-copy "^1.2.0"
-    walk-sync "^0.3.3"
+    walk-sync "^1.1.3"
 
 broccoli-stew@^1.5.0:
   version "1.6.0"
@@ -3003,6 +3013,26 @@ broccoli-stew@^1.5.0:
     symlink-or-copy "^1.2.0"
     walk-sync "^0.3.0"
 
+broccoli-stew@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/broccoli-stew/-/broccoli-stew-2.1.0.tgz#ba73add17fda3b9b01d8cfb343a8b613b7136a0a"
+  integrity sha512-tgCkuTWYl4uf7k7ib2D79KFEj2hCgnTUNPMnrCoAha0/4bywcNccmaZVWtL9Ex37yX5h5eAbnM/ak2ULoMwSSw==
+  dependencies:
+    broccoli-debug "^0.6.5"
+    broccoli-funnel "^2.0.0"
+    broccoli-merge-trees "^3.0.1"
+    broccoli-persistent-filter "^2.1.1"
+    broccoli-plugin "^1.3.1"
+    chalk "^2.4.1"
+    debug "^3.1.0"
+    ensure-posix-path "^1.0.1"
+    fs-extra "^6.0.1"
+    minimatch "^3.0.4"
+    resolve "^1.8.1"
+    rsvp "^4.8.4"
+    symlink-or-copy "^1.2.0"
+    walk-sync "^0.3.3"
+
 broccoli-uglify-sourcemap@^3.1.0:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/broccoli-uglify-sourcemap/-/broccoli-uglify-sourcemap-3.1.1.tgz#c99342fe1da09ff79653b6184ef8efe0b9bac793"
@@ -5631,7 +5661,7 @@ fs-extra@^7.0.0, fs-extra@^7.0.1:
     jsonfile "^4.0.0"
     universalify "^0.1.0"
 
-fs-extra@^8.0.0:
+fs-extra@^8.0.0, fs-extra@^8.0.1:
   version "8.1.0"
   resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-8.1.0.tgz#49d43c45a88cd9677668cb7be1b46efdb8d2e1c0"
   integrity sha512-yhlQgA6mnOJUKOsRUFsgJdQCvkKhcz8tlZG5HBQfReYZy46OwLcY+Zia0mtdHsOo9y/hP+CxMN0TU9QxoOtG4g==
@@ -9937,7 +9967,7 @@ rsvp@^3.0.14, rsvp@^3.0.17, rsvp@^3.0.18, rsvp@^3.0.21, rsvp@^3.0.6, rsvp@^3.1.0
   resolved "https://registry.yarnpkg.com/rsvp/-/rsvp-3.6.2.tgz#2e96491599a96cde1b515d5674a8f7a91452926a"
   integrity sha512-OfWGQTb9vnwRjwtA2QwpG2ICclHC3pgXZO5xt8H2EfgDquO0qVdSb5T88L4qJVAEugbS56pAuV4XZM58UX8ulw==
 
-rsvp@^4.6.1, rsvp@^4.7.0, rsvp@^4.8.0, rsvp@^4.8.1, rsvp@^4.8.2, rsvp@^4.8.3, rsvp@^4.8.4:
+rsvp@^4.6.1, rsvp@^4.7.0, rsvp@^4.8.0, rsvp@^4.8.1, rsvp@^4.8.2, rsvp@^4.8.3, rsvp@^4.8.4, rsvp@^4.8.5:
   version "4.8.5"
   resolved "https://registry.yarnpkg.com/rsvp/-/rsvp-4.8.5.tgz#c8f155311d167f68f21e168df71ec5b083113734"
   integrity sha512-nfMOlASu9OnRJo1mbEk2cz0D56a1MBNrJ7orjRZQG10XDyuvwksKbuXNp6qa+kbn839HwjwhBzhFmdsaEAfauA==