diff --git a/server/package.json b/server/package.json
index ca41641..175ae5a 100644
--- a/server/package.json
+++ b/server/package.json
@@ -36,7 +36,7 @@
     "babel-preset-env": "^1.7.0",
     "babel-preset-es2015": "^6.24.1",
     "es6-promise": "^4.2.4",
-    "event-stream": "^3.3.4",
+    "event-stream": "3.3.4",
     "file-loader": "^1.1.11",
     "grafana-datasource-kit": "0.0.10",
     "jest": "^23.1.1",