diff --git a/package.json b/package.json
index cbed81f..0f2fed3 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
   "author": "Irakli Gozalishvili <dev@gozala.io>",
   "homepage": "https://github.com/gozala/web-encoding",
   "devDependencies": {
-    "mocha": "^8.0.1",
+    "mocha": "8.0.1",
     "playwright-test": "0.7.1"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 264cd8e..bb01f07 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2192,7 +2192,7 @@ mkdirp@^0.5.1, mkdirp@^0.5.3, mkdirp@^0.5.4:
   dependencies:
     minimist "^1.2.5"
 
-mocha@^8.0.1:
+mocha@8.0.1:
   version "8.0.1"
   resolved "https://registry.yarnpkg.com/mocha/-/mocha-8.0.1.tgz#fe01f0530362df271aa8f99510447bc38b88d8ed"
   integrity sha512-vefaXfdYI8+Yo8nPZQQi0QO2o+5q9UIMX1jZ1XMmK3+4+CQjc7+B0hPdUeglXiTlr8IHMVRo63IhO9Mzt6fxOg==