diff --git a/package.json b/package.json
index 39be6d2..5a7cbc3 100644
--- a/package.json
+++ b/package.json
@@ -368,7 +368,8 @@
         "@types/node": "^8.10.42",
         "tslint": "^5.13.1",
         "typescript": "^3.4.0",
-        "vscode": "^1.1.33"
+        "vscode": "^1.1.33",
+        "querystringify": ">=2.0.0"
     },
     "dependencies": {
         "phi-colors": "^1.0.0"