diff --git a/package.json b/package.json
index 4eb3d66bb..0660acaed 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "sharp",
   "description": "High performance Node.js image processing, the fastest module to resize JPEG, PNG, WebP and TIFF images",
-  "version": "0.18.1",
+  "version": "0.18.2-alpha",
   "author": "Lovell Fuller <npm@lovell.info>",
   "homepage": "https://github.com/lovell/sharp",
   "contributors": [
@@ -72,7 +72,7 @@
     "got": "^7.0.0",
     "nan": "^2.6.2",
     "semver": "^5.3.0",
-    "tar": "^3.1.3"
+    "tar": "^3.1.5"
   },
   "devDependencies": {
     "async": "^2.4.1",
@@ -81,7 +81,7 @@
     "exif-reader": "^1.0.2",
     "icc": "^1.0.0",
     "mocha": "^3.4.2",
-    "nyc": "^10.3.2",
+    "nyc": "^11.0.2",
     "rimraf": "^2.6.1",
     "semistandard": "^11.0.0",
     "unzip": "^0.1.11"