diff --git a/progtest/package.json b/progtest/package.json
index 97c70f1c..8a5e57df 100644
--- a/progtest/package.json
+++ b/progtest/package.json
@@ -9,7 +9,7 @@
       "js-yaml": "3.10.0"
   },
   "devDependencies": {
-      "browserify": "16.10.0"
+      "browserify": "16.1.0"
   },
 
   "license": "GPL-3.0+"