diff --git a/ember-slugify/package.json b/ember-slugify/package.json
index 2c422f1..98a755d 100644
--- a/ember-slugify/package.json
+++ b/ember-slugify/package.json
@@ -97,7 +97,7 @@
     "@types/ember__modifier": "^4.0.9",
     "@types/ember__object": "^4.0.12",
     "@types/ember__owner": "^4.0.9",
-    "@types/ember__polyfills": "^4.0.2",
+    "@types/ember__polyfills": "^4.0.6",
     "@types/ember__routing": "^4.0.13",
     "@types/ember__runloop": "^4.0.10",
     "@types/ember__service": "^4.0.9",
diff --git a/test-app/package.json b/test-app/package.json
index 68a87ad..e7aab39 100644
--- a/test-app/package.json
+++ b/test-app/package.json
@@ -54,7 +54,7 @@
     "@types/ember__modifier": "^4.0.9",
     "@types/ember__object": "^4.0.12",
     "@types/ember__owner": "^4.0.9",
-    "@types/ember__polyfills": "^4.0.4",
+    "@types/ember__polyfills": "^4.0.6",
     "@types/ember__routing": "^4.0.17",
     "@types/ember__runloop": "^4.0.10",
     "@types/ember__service": "^4.0.9",
diff --git a/yarn.lock b/yarn.lock
index c2307ee..2c50428 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2307,10 +2307,10 @@
   resolved "https://registry.yarnpkg.com/@types/ember__owner/-/ember__owner-4.0.9.tgz#6abe1d529a9969a461692848dfac375d395f209e"
   integrity sha512-iyBda4aUIjBmeiKTKmPow/EJO7xWn8m85CnQTOCqQzTWJyJpgfObbXSHahOHXOfMm279Oa5NlbmS/EontB+XiQ==
 
-"@types/ember__polyfills@*", "@types/ember__polyfills@^4.0.2", "@types/ember__polyfills@^4.0.4":
-  version "4.0.5"
-  resolved "https://registry.yarnpkg.com/@types/ember__polyfills/-/ember__polyfills-4.0.5.tgz#e9527cb9755aa7fe12b021d720561e5200975121"
-  integrity sha512-KOdgOFGCIMtBb6bMEsze7LDA2+h588qJCmFTsFBdicZFMX7lWg3hju5568bD7SXBpXvBF2a9a1Xv4fpNdRntWA==
+"@types/ember__polyfills@*", "@types/ember__polyfills@^4.0.6":
+  version "4.0.6"
+  resolved "https://registry.yarnpkg.com/@types/ember__polyfills/-/ember__polyfills-4.0.6.tgz#b6dd993a89470caeacc38a58822572dd2450de79"
+  integrity sha512-hbds3Qv+oVm/QKIaY1E6atvrCoJTH/MPSl4swOhX6P0RiMB2fOfFCrFSD1mP1KrU1LqpHJ2Rzs7XLe53SWVzgw==
 
 "@types/ember__routing@*", "@types/ember__routing@^4.0.13", "@types/ember__routing@^4.0.17":
   version "4.0.19"