diff --git a/package-lock.json b/package-lock.json
index d9de7aa..3d84780 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,12 +4,6 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
-    "amdefine": {
-      "version": "1.0.1",
-      "resolved": "https://npm.welocalize.tools/amdefine/-/amdefine-1.0.1.tgz",
-      "integrity": "sha1-SlKCrBZHKek2Gbz9OtFR+BfOkfU=",
-      "dev": true
-    },
     "animate.css": {
       "version": "3.7.2",
       "resolved": "https://npm.welocalize.tools/animate.css/-/animate.css-3.7.2.tgz",
@@ -38,22 +32,12 @@
       }
     },
     "clean-css": {
-      "version": "3.4.28",
-      "resolved": "https://npm.welocalize.tools/clean-css/-/clean-css-3.4.28.tgz",
-      "integrity": "sha1-vxlF6C/ICPVWlebd6uwBQA79A/8=",
-      "dev": true,
-      "requires": {
-        "commander": "2.8.x",
-        "source-map": "0.4.x"
-      }
-    },
-    "commander": {
-      "version": "2.8.1",
-      "resolved": "https://npm.welocalize.tools/commander/-/commander-2.8.1.tgz",
-      "integrity": "sha1-Br42f+v9oMMwqh4qBy09yXYkJdQ=",
+      "version": "4.1.11",
+      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-4.1.11.tgz",
+      "integrity": "sha1-Ls3xRaujj1R0DybO/Q/z4D4SXWo=",
       "dev": true,
       "requires": {
-        "graceful-readlink": ">= 1.0.0"
+        "source-map": "0.5.x"
       }
     },
     "concat-map": {
@@ -195,12 +179,6 @@
         "path-is-absolute": "^1.0.0"
       }
     },
-    "graceful-readlink": {
-      "version": "1.0.1",
-      "resolved": "https://npm.welocalize.tools/graceful-readlink/-/graceful-readlink-1.0.1.tgz",
-      "integrity": "sha1-TK+tdrxi8C+gObL5Tpo906ORpyU=",
-      "dev": true
-    },
     "http-errors": {
       "version": "1.7.3",
       "resolved": "https://npm.welocalize.tools/http-errors/-/http-errors-1.7.3.tgz",
@@ -365,13 +343,10 @@
       "dev": true
     },
     "source-map": {
-      "version": "0.4.4",
-      "resolved": "https://npm.welocalize.tools/source-map/-/source-map-0.4.4.tgz",
-      "integrity": "sha1-66T12pwNyZneaAMti092FzZSA2s=",
-      "dev": true,
-      "requires": {
-        "amdefine": ">=0.0.4"
-      }
+      "version": "0.5.7",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
+      "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
+      "dev": true
     },
     "source-map-resolve": {
       "version": "0.5.3",
diff --git a/package.json b/package.json
index d526162..cf70172 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "animate.css": "^3.5.2"
   },
   "devDependencies": {
-    "clean-css": "^3.4.20",
+    "clean-css": "^4.1.11",
     "connect": "^3.5.0",
     "serve-static": "^1.11.1",
     "stylus": "^0.54.5"