diff --git a/package.json b/package.json
index 89b62bcc..a260a47e 100644
--- a/package.json
+++ b/package.json
@@ -43,12 +43,12 @@
     "@mike-north/js-lib-semantic-release-config": "1.0.1",
     "@semantic-release/exec": "3.3.8",
     "@semantic-release/git": "7.0.18",
-    "@types/ember": "3.1.2",
-    "@types/ember-qunit": "3.4.15",
+    "@types/ember": "4.0.0",
+    "@types/ember-qunit": "5.0.0",
     "@types/ember-test-helpers": "1.0.10",
     "@types/ember-testing-helpers": "0.0.4",
-    "@types/ember__test-helpers": "0.7.12",
-    "@types/mocha": "5.2.7",
+    "@types/ember__test-helpers": "2.6.1",
+    "@types/mocha": "9.1.1",
     "@types/qunit": "2.9.6",
     "@types/rsvp": "4.0.4",
     "babel-eslint": "10.1.0",
diff --git a/yarn.lock b/yarn.lock
index 384dc67e..c487bbb1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1494,16 +1494,24 @@
   resolved "https://registry.yarnpkg.com/@types/cors/-/cors-2.8.12.tgz#6b2c510a7ad7039e98e7b8d3d6598f4359e5c080"
   integrity sha512-vt+kDhq/M2ayberEtJcIN/hxXy1Pk+59g2FV/ZQceeaTyCtCucjL2Q7FXlFjtWn4n15KCr1NE2lNNFhp0lEThw==
 
-"@types/ember-qunit@3.4.15":
-  version "3.4.15"
-  resolved "https://registry.yarnpkg.com/@types/ember-qunit/-/ember-qunit-3.4.15.tgz#333b3644f4c80af755f54f82ccdf3f1652cfac8d"
-  integrity sha512-ZWQcnLCsQfNq0MK9o0dt+reFn9Sk6rcMP2f/bkRRM/HCnNSD1XjMgnRhbKcDmCk0CmxTt5WtfSmlO0TYubcxcA==
+"@types/ember-qunit@5.0.0":
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/@types/ember-qunit/-/ember-qunit-5.0.0.tgz#e39749d129dc7643df13d8df94225867c57d006e"
+  integrity sha512-p7ZZUbohO5E57JsUC6fxD8gveV9LcSnPIx2J86WF7FNLno/2oKvWnI+j5AtobSoy86hfZZaYjiIuW0dNe1eblQ==
   dependencies:
-    "@types/ember" "*"
-    "@types/ember-test-helpers" "*"
+    "@types/ember-resolver" "*"
+    "@types/ember__test" "*"
+    "@types/ember__test-helpers" "*"
     "@types/qunit" "*"
 
-"@types/ember-test-helpers@*", "@types/ember-test-helpers@1.0.10":
+"@types/ember-resolver@*":
+  version "5.0.11"
+  resolved "https://registry.yarnpkg.com/@types/ember-resolver/-/ember-resolver-5.0.11.tgz#db931fb5c2d6bda4e29adea132fb48c7ed17aa62"
+  integrity sha512-2BL9d8kBdNUO9Je6KBF7Q34BSwbQG6vzCzTeSopt8FAmLDfaDU9xDDdyZobpfy9GR36mCSeG9b9wr4bgYh/MYw==
+  dependencies:
+    "@types/ember__object" "*"
+
+"@types/ember-test-helpers@1.0.10":
   version "1.0.10"
   resolved "https://registry.yarnpkg.com/@types/ember-test-helpers/-/ember-test-helpers-1.0.10.tgz#cbd7f7e73a05f1c08075b99d4906cd5d92f443f0"
   integrity sha512-sa0bIRIFPJanqA+6gzjLPUtBifJmVh7PKWwR1C0tmt+R2/CKSFMxn1j38nafNDNKS1so2KVCU/WmHvQ/WlF+gA==
@@ -1547,10 +1555,10 @@
     "@types/jquery" "*"
     "@types/rsvp" "*"
 
-"@types/ember@3.1.2":
-  version "3.1.2"
-  resolved "https://registry.yarnpkg.com/@types/ember/-/ember-3.1.2.tgz#b795e41f4a5569447c006e293195e62dc139cced"
-  integrity sha512-Z4jxklUlnoWEkenLaMDDmzguL3UUcAIaCiu28nNYlIovWTGmvKuJgUKSqd+03j4jjzaz+yz0fepM408XULew/A==
+"@types/ember@4.0.0":
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/@types/ember/-/ember-4.0.0.tgz#0c29294fa0e5aa07ba6090f60243707dde8fc411"
+  integrity sha512-IR4o8OkFgoiRKVLRI8URvyNhEBSkjO5DXp2900/TptxOl0Retu8/tKtFaRTwkqteg2a0/6zXAA1rpFb3BbxNpA==
   dependencies:
     "@types/ember__application" "*"
     "@types/ember__array" "*"
@@ -1569,7 +1577,6 @@
     "@types/ember__test" "*"
     "@types/ember__utils" "*"
     "@types/htmlbars-inline-precompile" "*"
-    "@types/jquery" "*"
     "@types/rsvp" "*"
 
 "@types/ember__application@*":
@@ -1683,14 +1690,15 @@
   resolved "https://registry.yarnpkg.com/@types/ember__template/-/ember__template-3.16.1.tgz#30d7f50a49b190934db0f5a56dd76ad86c21efc6"
   integrity sha512-APQINizzizl2LHWGMFBCanRjKZQsdzqn7b+us17zbNhnx/R0IZAJq901x/i7eozCRwxsDKmGzNABSCIu6uc1Tg==
 
-"@types/ember__test-helpers@0.7.12":
-  version "0.7.12"
-  resolved "https://registry.yarnpkg.com/@types/ember__test-helpers/-/ember__test-helpers-0.7.12.tgz#53bcf5fcf6e77732dd286cba3782a6a965a0dace"
-  integrity sha512-9GD0uTCGIXBU3OT4OoaLPMgwXK+EMMnLDvGE+Pt8wgYLIoPYmqoPNLrEbNlN2M52ZvODsFeOUPkJsup+fbFpIg==
+"@types/ember__test-helpers@*", "@types/ember__test-helpers@2.6.1":
+  version "2.6.1"
+  resolved "https://registry.yarnpkg.com/@types/ember__test-helpers/-/ember__test-helpers-2.6.1.tgz#2835bc60fd7daa93292d669fa9b61706836fe2e7"
+  integrity sha512-d2RShuBSaBzp04nt8ad+mNE1F6rbIcIIud8WFUVQqGSUGHuZQUq1051Jza12ksCUnXduyE/J9UDjyZvNKOHeBQ==
   dependencies:
-    "@types/ember" "*"
+    "@types/ember-resolver" "*"
     "@types/ember__application" "*"
     "@types/ember__error" "*"
+    "@types/ember__test-helpers" "*"
     "@types/htmlbars-inline-precompile" "*"
 
 "@types/ember__test@*":
@@ -1785,10 +1793,10 @@
   resolved "https://registry.yarnpkg.com/@types/minimist/-/minimist-1.2.2.tgz#ee771e2ba4b3dc5b372935d549fd9617bf345b8c"
   integrity sha512-jhuKLIRrhvCPLqwPcx6INqmKeiA5EWrsCOPhrlFSrbrmU4ZMPjj5Ul/oLCMDO98XRUIwVm78xICz4EPCektzeQ==
 
-"@types/mocha@5.2.7":
-  version "5.2.7"
-  resolved "https://registry.yarnpkg.com/@types/mocha/-/mocha-5.2.7.tgz#315d570ccb56c53452ff8638738df60726d5b6ea"
-  integrity sha512-NYrtPht0wGzhwe9+/idPaBB+TqkY9AhTvOLMkThm0IoEfLaiVQZwBwyJ5puCkO3AUCWrmcoePjp2mbFocKy4SQ==
+"@types/mocha@9.1.1":
+  version "9.1.1"
+  resolved "https://registry.yarnpkg.com/@types/mocha/-/mocha-9.1.1.tgz#e7c4f1001eefa4b8afbd1eee27a237fee3bf29c4"
+  integrity sha512-Z61JK7DKDtdKTWwLeElSEBcWGRLY8g95ic5FoQqI9CMx0ns/Ghep3B4DfcEimiKMvtamNVULVNKEsiwV3aQmXw==
 
 "@types/node@*", "@types/node@>= 8", "@types/node@>=10.0.0":
   version "16.11.11"