diff --git a/package.json b/package.json
index d92d1e6..b8e5cdf 100644
--- a/package.json
+++ b/package.json
@@ -32,26 +32,26 @@
   "license": "MIT",
   "dependencies": {
     "console-browserify": "~1.1.0",
-    "constants-browserify": "~0.0.1",
-    "crypto-browserify": "~3.9.10",
+    "constants-browserify": "~1.0.0",
+    "crypto-browserify": "~3.11.0",
     "http-browserify": "~1.7.0",
-    "buffer": "~3.0.0",
-    "os-browserify": "~0.1.2",
+    "buffer": "~5.0.2",
+    "os-browserify": "~0.2.1",
     "vm-browserify": "~0.0.4",
     "zlib-browserify": "~0.0.3",
-    "assert": "~1.3.0",
+    "assert": "~1.4.1",
     "domain-browser": "~1.1.2",
-    "events": "~1.0.1",
+    "events": "~1.1.1",
     "https-browserify": "~0.0.0",
     "path-browserify": "~0.0.0",
     "string_decoder": "~0.10.0",
     "tty-browserify": "~0.0.0",
-    "process": "~0.10.0",
-    "punycode": "~1.3.0"
+    "process": "~0.11.9",
+    "punycode": "~2.0.1"
   },
   "devDependencies": {
-    "zuul": "2.1.x",
-    "tape": "3.5.x"
+    "zuul": "~3.11.1",
+    "tape": "~4.6.3"
   },
   "browser": {
     "console": "console-browserify",