diff --git a/v4-cokapi/backends/javascript/package.json b/v4-cokapi/backends/javascript/package.json
index 5420513ed..756e435b1 100644
--- a/v4-cokapi/backends/javascript/package.json
+++ b/v4-cokapi/backends/javascript/package.json
@@ -19,7 +19,7 @@
     "eval": "0.1.0",
     "minimist": "^1.2.0",
     "source-map": "^0.5.6",
-    "typescript": "1.4",
+    "typescript": "3.6.4",
     "underscore": "^1.8.3"
   }
 }