diff --git a/extension/package.json b/extension/package.json
index 2ab9e85d1..34e0192dc 100644
--- a/extension/package.json
+++ b/extension/package.json
@@ -46,7 +46,7 @@
   },
   "homepage": "https://github.com/commercetools/commercetools-adyen-integration",
   "devDependencies": {
-    "chai": "4.3.10",
+    "chai": "5.0.0",
     "chai-as-promised": "7.1.1",
     "doctoc": "2.2.1",
     "eslint": "8.56.0",
@@ -62,7 +62,7 @@
     "proxyquire": "2.1.3",
     "puppeteer": "21.7.0",
     "sinon": "17.0.1",
-    "c8": "8.0.1"
+    "c8": "9.0.0"
   },
   "dependencies": {
     "@commercetools/api-request-builder": "6.0.0",
diff --git a/notification/package.json b/notification/package.json
index 745a5a19a..d7bdc24ca 100644
--- a/notification/package.json
+++ b/notification/package.json
@@ -63,7 +63,7 @@
     "verror": "1.10.1"
   },
   "devDependencies": {
-    "chai": "4.3.10",
+    "chai": "5.0.0",
     "chai-as-promised": "7.1.1",
     "eslint": "8.56.0",
     "eslint-config-airbnb-base": "15.0.0",
@@ -78,7 +78,7 @@
     "p-map": "7.0.1",
     "prettier": "3.1.1",
     "sinon": "17.0.1",
-    "c8": "8.0.1"
+    "c8": "9.0.0"
   },
   "husky": {
     "hooks": {