diff --git a/src/wrappers/themis/jsthemis/package.json b/src/wrappers/themis/jsthemis/package.json
index 2510c2bdc..98639f88d 100644
--- a/src/wrappers/themis/jsthemis/package.json
+++ b/src/wrappers/themis/jsthemis/package.json
@@ -31,7 +31,7 @@
     "nan": "^2.17.0"
   },
   "devDependencies": {
-    "mocha": "^9"
+    "mocha": "^7"
   },
   "gypfile": true
 }