diff --git a/package.json b/package.json
index a3be224..5f24edc 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
     "assert": "*",
     "bluebird": "*",
     "optimist": "*",
-    "express": "~4.0.0",
+    "express": "~4.17.3",
     "express-session": "*",
     "express-http-proxy": "*",
     "passport": ">= 0.0.0",
@@ -27,7 +27,7 @@
     "deasync": "*",
     "data.io": "*",
     "tingodb": "0.3.5",
-    "pouchdb": "3.1.0",
+    "pouchdb": "4.0.2",
     "swagger-tools": "*",
     "body-parser": "*",
     "chai": "*",
@@ -48,7 +48,7 @@
     "mocha": "*",
     "mosca": "1.1.0",
     "mqtt": "^1.14.1",
-    "multer": "0.1.6",
+    "multer": "1.0.0",
     "node-uuid": "*",
     "numeric": "*",
     "plotly": "0.2.13",