diff --git a/package.json b/package.json
index ce6b278..2e7141d 100644
--- a/package.json
+++ b/package.json
@@ -15,18 +15,18 @@
     "http-errors": "~1.5.1"
   },
   "devDependencies": {
-    "body-parser": "1.15.2",
-    "connect": "3.6.2",
+    "body-parser": "1.18.2",
+    "connect": "3.6.5",
     "cookie-parser": "1.4.3",
-    "cookie-session": "1.2.0",
-    "eslint": "3.10.2",
+    "cookie-session": "1.3.2",
+    "eslint": "4.18.2",
     "eslint-config-standard": "6.2.1",
-    "eslint-plugin-markdown": "1.0.0-beta.4",
+    "eslint-plugin-markdown": "1.0.0",
     "eslint-plugin-promise": "3.4.0",
     "eslint-plugin-standard": "2.0.1",
     "istanbul": "0.4.5",
-    "mocha": "2.5.3",
-    "supertest": "1.1.0"
+    "mocha": "6.2.3",
+    "supertest": "3.0.0"
   },
   "engines": {
     "node": ">= 0.8.0"