diff --git a/CHANGELOG.md b/CHANGELOG.md
index c6cc0041a4c..e5eb5f5e9a7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## [next]
 
+- ci(): install dev deps types [#9039](https://github.com/fabricjs/fabric.js/pull/9039)
+
 ## [6.0.0-beta10]
 
 - chore(TS): Remove @ts-nocheck from Text class. [#9018](https://github.com/fabricjs/fabric.js/pull/9018)
diff --git a/package-lock.json b/package-lock.json
index 3834ec4a325..7d7d606e661 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6,7 +6,7 @@
   "packages": {
     "": {
       "name": "fabric",
-      "version": "6.0.0-beta9",
+      "version": "6.0.0-beta10",
       "license": "MIT",
       "devDependencies": {
         "@babel/cli": "^7.20.7",
@@ -22,6 +22,7 @@
         "@types/jest": "^29.5.2",
         "@types/jsdom": "^20.0.1",
         "@types/lodash": "^4.14.180",
+        "@types/mocha": "^10.0.1",
         "@types/node": "^17.0.21",
         "@typescript-eslint/eslint-plugin": "^5.59.5",
         "@typescript-eslint/parser": "^5.59.5",
@@ -3129,6 +3130,12 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@types/mocha": {
+      "version": "10.0.1",
+      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-10.0.1.tgz",
+      "integrity": "sha512-/fvYntiO1GeICvqbQ3doGDIP97vWmvFt83GKguJ6prmQM2iXZfFcq6YE8KteFyRtX2/h5Hf91BYvPodJKFYv5Q==",
+      "dev": true
+    },
     "node_modules/@types/node": {
       "version": "17.0.21",
       "dev": true,
@@ -14056,6 +14063,12 @@
       "version": "4.14.180",
       "dev": true
     },
+    "@types/mocha": {
+      "version": "10.0.1",
+      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-10.0.1.tgz",
+      "integrity": "sha512-/fvYntiO1GeICvqbQ3doGDIP97vWmvFt83GKguJ6prmQM2iXZfFcq6YE8KteFyRtX2/h5Hf91BYvPodJKFYv5Q==",
+      "dev": true
+    },
     "@types/node": {
       "version": "17.0.21",
       "dev": true
diff --git a/package.json b/package.json
index 2f87b8bb597..4aa29fa239e 100644
--- a/package.json
+++ b/package.json
@@ -88,6 +88,7 @@
     "@types/jest": "^29.5.2",
     "@types/jsdom": "^20.0.1",
     "@types/lodash": "^4.14.180",
+    "@types/mocha": "^10.0.1",
     "@types/node": "^17.0.21",
     "@typescript-eslint/eslint-plugin": "^5.59.5",
     "@typescript-eslint/parser": "^5.59.5",