diff --git a/package-lock.json b/package-lock.json
index f19d1ccb..241a38db 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -644,9 +644,9 @@
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-          "version": "1.0.30000832",
-          "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30000832.tgz",
-          "integrity": "sha512-WMC2GiGTPxGywFL70h+CnP7GAYo6LM6JSI1sF13vAZfXCzOeunHzl20DpfbDGMdvtT2wpqvabY96MHEp/la+BQ==",
+          "version": "1.0.30000830",
+          "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30000830.tgz",
+          "integrity": "sha512-yMqGkujkoOIZfvOYiWdqPALgY/PVGiqCHUJb6yNq7xhI/pR+gQO0U2K6lRDqAiJv4+CIU3CtTLblNGw0QGnr6g==",
           "dev": true
         },
         "chalk": {
@@ -673,14 +673,14 @@
           "dev": true
         },
         "postcss": {
-          "version": "6.0.22",
-          "resolved": "https://registry.npmjs.org/postcss/-/postcss-6.0.22.tgz",
-          "integrity": "sha512-Toc9lLoUASwGqxBSJGTVcOQiDqjK+Z2XlWBg+IgYwQMY9vA2f7iMpXVc1GpPcfTSyM5lkxNo0oDwDRO+wm7XHA==",
+          "version": "6.0.21",
+          "resolved": "https://registry.npmjs.org/postcss/-/postcss-6.0.21.tgz",
+          "integrity": "sha512-y/bKfbQz2Nn/QBC08bwvYUxEFOVGfPIUOTsJ2CK5inzlXW9SdYR1x4pEsG9blRAF/PX+wRNdOah+gx/hv4q7dw==",
           "dev": true,
           "requires": {
-            "chalk": "^2.4.1",
+            "chalk": "^2.3.2",
             "source-map": "^0.6.1",
-            "supports-color": "^5.4.0"
+            "supports-color": "^5.3.0"
           }
         },
         "supports-color": {
@@ -14936,13 +14936,13 @@
       "dev": true
     },
     "uglify-js": {
-      "version": "3.3.22",
-      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.3.22.tgz",
-      "integrity": "sha512-tqw96rL6/BG+7LM5VItdhDjTQmL5zG/I0b2RqWytlgeHe2eydZHuBHdA9vuGpCDhH/ZskNGcqDhivoR2xt8RIw==",
+      "version": "3.3.23",
+      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.3.23.tgz",
+      "integrity": "sha512-Ks+KqLGDsYn4z+pU7JsKCzC0T3mPYl+rU+VcPZiQOazjE4Uqi4UCRY3qPMDbJi7ze37n1lDXj3biz1ik93vqvw==",
       "dev": true,
       "requires": {
-        "commander": "2.15.1",
-        "source-map": "0.6.1"
+        "commander": "~2.15.0",
+        "source-map": "~0.6.1"
       },
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diff --git a/package.json b/package.json
index d5e6a376..fa849b5c 100644
--- a/package.json
+++ b/package.json
@@ -68,7 +68,7 @@
     "pretty-bytes-cli": "2.0.0",
     "semver": "5.5.0",
     "sinon": "4.5.0",
-    "uglify-js": "3.3.22",
+    "uglify-js": "3.3.23",
     "webpack": "3.10.0",
     "webpack-dev-server": "2.11.2"
   },