diff --git a/package.json b/package.json
index 20fdc66..69ed331 100644
--- a/package.json
+++ b/package.json
@@ -4,15 +4,15 @@
   "description": "Turn a writable and readable stream into a streams2 duplex stream with support for async initialization and streams1/streams2 input",
   "main": "index.js",
   "dependencies": {
-    "end-of-stream": "^1.4.1",
-    "inherits": "^2.0.3",
-    "readable-stream": "^3.1.1",
-    "stream-shift": "^1.0.0"
+    "end-of-stream": "^1.4.4",
+    "inherits": "^2.0.4",
+    "readable-stream": "^3.6.0",
+    "stream-shift": "^1.0.1"
   },
   "devDependencies": {
-    "concat-stream": "^1.5.2",
-    "tape": "^4.0.0",
-    "through2": "^2.0.0"
+    "concat-stream": "^2.0.0",
+    "tape": "^5.0.1",
+    "through2": "^3.0.2"
   },
   "scripts": {
     "test": "tape test.js"