diff --git a/package.json b/package.json
index b1e195965ff..84aa72ad6e5 100644
--- a/package.json
+++ b/package.json
@@ -136,7 +136,7 @@
     "ember-truth-helpers": "^3.0.0",
     "ember-uuid": "^2.1.0",
     "eslint": "^7.32.0",
-    "eslint-plugin-ember": "^10.5.8",
+    "eslint-plugin-ember": "^10.5.9",
     "eslint-plugin-ember-suave": "^2.0.1",
     "eslint-plugin-node": "^11.1.0",
     "fastboot-app-server": "^3.2.0",
diff --git a/yarn.lock b/yarn.lock
index 13a722a74d1..38ef71bcb63 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6145,13 +6145,13 @@ css-select@~1.0.0:
     domutils "1.4"
     nth-check "~1.0.0"
 
-css-tree@^1.0.0-alpha.39:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/css-tree/-/css-tree-1.0.0.tgz#21993fa270d742642a90409a2c0cb3ac0298adf6"
-  integrity sha512-CdVYz/Yuqw0VdKhXPBIgi8DO3NicJVYZNWeX9XcIuSp9ZoFT5IcleVRW07O5rMjdcx1mb+MEJPknTTEW7DdsYw==
+css-tree@^2.0.4:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/css-tree/-/css-tree-2.0.4.tgz#be44314f17e9ac85fe894a5888941782e1123c29"
+  integrity sha512-b4IS9ZUMtGBiNjzYbcj9JhYbyei99R3ai2CSxlu8GQDnoPA/P+NU85hAm0eKDc/Zp660rpK6tFJQ2OSdacMHVg==
   dependencies:
-    mdn-data "2.0.12"
-    source-map "^0.6.1"
+    mdn-data "2.0.23"
+    source-map-js "^1.0.1"
 
 css-what@1.0:
   version "1.0.0"
@@ -8708,13 +8708,13 @@ eslint-plugin-ember-suave@^2.0.1:
     eslint-plugin-import "^2.17.2"
     requireindex "~1.2.0"
 
-eslint-plugin-ember@^10.5.8:
-  version "10.5.8"
-  resolved "https://registry.yarnpkg.com/eslint-plugin-ember/-/eslint-plugin-ember-10.5.8.tgz#87e004a5ebed88f94008364554daf57df2c9c718"
-  integrity sha512-d21mJ+F+htgi6HhrjwbOfllJojF4ZWGruW13HkBoGS2SaHqKUyvIH/8j3EjSxlsGFiNfhTEUWkNaUSLJxgbtWg==
+eslint-plugin-ember@^10.5.9:
+  version "10.5.9"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-ember/-/eslint-plugin-ember-10.5.9.tgz#4071ac135c7207c7d4942e9fa75b710214885469"
+  integrity sha512-kJsdAaKNcfRvZBZ+YZ67pxxUgl+aPLFAnoFJNwTo+BsaptiOCsHUEc4xUKXiInH2BJOC6mg0FQcZKn1a6gwKrA==
   dependencies:
     "@ember-data/rfc395-data" "^0.0.4"
-    css-tree "^1.0.0-alpha.39"
+    css-tree "^2.0.4"
     ember-rfc176-data "^0.3.15"
     eslint-utils "^3.0.0"
     estraverse "^5.2.0"
@@ -12500,10 +12500,10 @@ md5.js@^1.3.4:
     hash-base "^3.0.0"
     inherits "^2.0.1"
 
-mdn-data@2.0.12:
-  version "2.0.12"
-  resolved "https://registry.yarnpkg.com/mdn-data/-/mdn-data-2.0.12.tgz#bbb658d08b38f574bbb88f7b83703defdcc46844"
-  integrity sha512-ULbAlgzVb8IqZ0Hsxm6hHSlQl3Jckst2YEQS7fODu9ilNWy2LvcoSY7TRFIktABP2mdppBioc66va90T+NUs8Q==
+mdn-data@2.0.23:
+  version "2.0.23"
+  resolved "https://registry.yarnpkg.com/mdn-data/-/mdn-data-2.0.23.tgz#dfb6c41e50a0edb808cf340973ab29321b70808e"
+  integrity sha512-IonVb7pfla2U4zW8rc7XGrtgq11BvYeCxWN8HS+KFBnLDE7XDK9AAMVhRuG6fj9BBsjc69Fqsp6WEActEdNTDQ==
 
 mdurl@^1.0.1:
   version "1.0.1"
@@ -15632,6 +15632,11 @@ source-map-js@^0.6.2:
   resolved "https://registry.yarnpkg.com/source-map-js/-/source-map-js-0.6.2.tgz#0bb5de631b41cfbda6cfba8bd05a80efdfd2385e"
   integrity sha512-/3GptzWzu0+0MBQFrDKzw/DvvMTUORvgY6k6jd/VS6iCR4RDTKWH6v6WPwQoUO8667uQEf9Oe38DxAYWY5F/Ug==
 
+source-map-js@^1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/source-map-js/-/source-map-js-1.0.2.tgz#adbc361d9c62df380125e7f161f71c826f1e490c"
+  integrity sha512-R0XvVJ9WusLiqTCEiGCmICCMplcCkIwwR11mOSD9CR5u+IXYdiseeEuXCVAjS54zqwkLcPNnmU4OeJ6tUrWhDw==
+
 source-map-resolve@^0.5.0:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/source-map-resolve/-/source-map-resolve-0.5.1.tgz#7ad0f593f2281598e854df80f19aae4b92d7a11a"