diff --git a/package.json b/package.json
index 75029fec4..21660cadd 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "test:ember": "pnpm --filter '*' test:ember"
   },
   "devDependencies": {
-    "concurrently": "8.2.2",
+    "concurrently": "9.0.1",
     "documentation": "14.0.3",
     "eslint": "8.57.1",
     "prettier": "2.8.8",
diff --git a/packages/qunit-dom/package.json b/packages/qunit-dom/package.json
index 170a5ead2..042cd1a7c 100644
--- a/packages/qunit-dom/package.json
+++ b/packages/qunit-dom/package.json
@@ -46,7 +46,7 @@
     "@vitest/coverage-v8": "2.0.5",
     "babel-plugin-transform-es2015-modules-commonjs": "6.26.2",
     "babel-preset-env": "1.7.0",
-    "concurrently": "8.2.2",
+    "concurrently": "9.0.1",
     "eslint": "8.57.1",
     "eslint-config-prettier": "9.1.0",
     "eslint-plugin-prettier": "5.2.1",
diff --git a/packages/test-app/package.json b/packages/test-app/package.json
index cfd425b64..862138fc0 100644
--- a/packages/test-app/package.json
+++ b/packages/test-app/package.json
@@ -65,7 +65,7 @@
     "babel-plugin-transform-es2015-modules-commonjs": "6.26.2",
     "babel-preset-env": "1.7.0",
     "broccoli-asset-rev": "3.0.0",
-    "concurrently": "8.2.2",
+    "concurrently": "9.0.1",
     "documentation": "14.0.3",
     "ember-auto-import": "2.7.4",
     "ember-cli": "4.12.3",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 58b654eb2..ce9635e42 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -9,8 +9,8 @@ importers:
   .:
     devDependencies:
       concurrently:
-        specifier: 8.2.2
-        version: 8.2.2
+        specifier: 9.0.1
+        version: 9.0.1
       documentation:
         specifier: 14.0.3
         version: 14.0.3
@@ -55,8 +55,8 @@ importers:
         specifier: 1.7.0
         version: 1.7.0(supports-color@8.1.1)
       concurrently:
-        specifier: 8.2.2
-        version: 8.2.2
+        specifier: 9.0.1
+        version: 9.0.1
       eslint:
         specifier: 8.57.1
         version: 8.57.1
@@ -230,8 +230,8 @@ importers:
         specifier: 3.0.0
         version: 3.0.0
       concurrently:
-        specifier: 8.2.2
-        version: 8.2.2
+        specifier: 9.0.1
+        version: 9.0.1
       documentation:
         specifier: 14.0.3
         version: 14.0.3
@@ -8115,17 +8115,15 @@ packages:
     resolution: {integrity: sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg==}
     dev: true
 
-  /concurrently@8.2.2:
-    resolution: {integrity: sha512-1dP4gpXFhei8IOtlXRE/T/4H88ElHgTiUzh71YUmtjTEHMSRS2Z/fgOxHSxxusGHogsRfxNq1vyAwxSC+EVyDg==}
-    engines: {node: ^14.13.0 || >=16.0.0}
+  /concurrently@9.0.1:
+    resolution: {integrity: sha512-wYKvCd/f54sTXJMSfV6Ln/B8UrfLBKOYa+lzc6CHay3Qek+LorVSBdMVfyewFhRbH0Rbabsk4D+3PL/VjQ5gzg==}
+    engines: {node: '>=18'}
     hasBin: true
     dependencies:
       chalk: 4.1.2
-      date-fns: 2.30.0
       lodash: 4.17.21
       rxjs: 7.8.1
       shell-quote: 1.8.1
-      spawn-command: 0.0.2
       supports-color: 8.1.1
       tree-kill: 1.2.2
       yargs: 17.7.2
@@ -8590,13 +8588,6 @@ packages:
       whatwg-url: 8.7.0
     dev: true
 
-  /date-fns@2.30.0:
-    resolution: {integrity: sha512-fnULvOpxnC5/Vg3NCiWelDsLiUc9bRwAPs/+LfTLNvetFCtCTN+yQz15C/fs4AwX1R9K5GLtLfn8QW+dWisaAw==}
-    engines: {node: '>=0.11'}
-    dependencies:
-      '@babel/runtime': 7.23.1
-    dev: true
-
   /date-fns@3.6.0:
     resolution: {integrity: sha512-fRHTG8g/Gif+kSh50gaGEdToemgfj74aRX3swtiouboip5JDLAyDE9F11nHMIcvOaXeOC6D7SpNhi7uFyB7Uww==}
     dev: true
@@ -17384,10 +17375,6 @@ packages:
     resolution: {integrity: sha512-73BoniQDcRWgnLAf/suKH6V5H54gd1KLzwYN9FB6J/evqTV33htH9xwV/4BHek+++jzxpVlZQKKZkqstPQPmQg==}
     dev: true
 
-  /spawn-command@0.0.2:
-    resolution: {integrity: sha512-zC8zGoGkmc8J9ndvml8Xksr1Amk9qBujgbF0JAIWO7kXr43w0h/0GJNM/Vustixu+YE8N/MTrQ7N31FvHUACxQ==}
-    dev: true
-
   /spdx-correct@3.2.0:
     resolution: {integrity: sha512-kN9dJbvnySHULIluDHy32WHRUu3Og7B9sbY7tsFLctQkIqnMh3hErYgdMjTYuqmcXX+lK5T1lnUt3G7zNswmZA==}
     dependencies: