diff --git a/package.json b/package.json
index b332b5fa55f..a2f0d890ba0 100644
--- a/package.json
+++ b/package.json
@@ -77,7 +77,7 @@
     "@types/semver": "^5.5.0",
     "@types/ws": "^5.1.2",
     "ansi-colors": "3.2.3",
-    "autoprefixer": "9.4.2",
+    "autoprefixer": "9.4.3",
     "conventional-changelog-cli": "^1.3.5",
     "css-what": "2.1.0",
     "cssnano": "4.1.7",
@@ -94,7 +94,7 @@
     "jest-cli": "^23.6.0",
     "jest-environment-node": "^23.4.0",
     "listr": "0.14.3",
-    "magic-string": "0.22.5",
+    "magic-string": "^0.25.1",
     "mime-db": "1.37.0",
     "minimatch": "3.0.4",
     "node-fetch": "1.7.3",
@@ -102,7 +102,7 @@
     "opn": "5.4.0",
     "parse5": "5.1.0",
     "pixelmatch": "4.0.2",
-    "postcss": "7.0.6",
+    "postcss": "7.0.7",
     "puppeteer": "~1.7.0",
     "rollup": "0.68.2",
     "rollup-plugin-commonjs": "9.2.0",
@@ -111,7 +111,7 @@
     "rollup-plugin-node-resolve": "3.4.0",
     "rollup-pluginutils": "2.3.3",
     "semver": "5.6.0",
-    "terser": "3.13.1",
+    "terser": "3.14.0",
     "tslib": "^1.9.3",
     "tslint": "^5.9.1",
     "tslint-ionic-rules": "0.0.13",