diff --git a/package-lock.json b/package-lock.json
index 6078b1c..9dfc5f3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -283,17 +283,108 @@
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-      "resolved": "https://registry.npmjs.org/autoprefixer/-/autoprefixer-6.7.7.tgz",
-      "integrity": "sha1-Hb0cg1ZY41zj+ZhAmdsAWFx4IBQ=",
+      "version": "9.8.6",
+      "resolved": "https://registry.npmjs.org/autoprefixer/-/autoprefixer-9.8.6.tgz",
+      "integrity": "sha512-XrvP4VVHdRBCdX1S3WXVD8+RyG9qeb1D5Sn1DeLiG2xfSpzellk5k54xbUERJ3M5DggQxes39UGOTP8CFrEGbg==",
       "dev": true,
       "requires": {
-        "browserslist": "^1.7.6",
-        "caniuse-db": "^1.0.30000634",
+        "browserslist": "^4.12.0",
+        "caniuse-lite": "^1.0.30001109",
+        "colorette": "^1.2.1",
         "normalize-range": "^0.1.2",
         "num2fraction": "^1.2.2",
-        "postcss": "^5.2.16",
-        "postcss-value-parser": "^3.2.3"
+        "postcss": "^7.0.32",
+        "postcss-value-parser": "^4.1.0"
+      },
+      "dependencies": {
+        "ansi-styles": {
+          "version": "3.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+          "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+          "dev": true,
+          "requires": {
+            "color-convert": "^1.9.0"
+          }
+        },
+        "browserslist": {
+          "version": "4.16.3",
+          "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.16.3.tgz",
+          "integrity": "sha512-vIyhWmIkULaq04Gt93txdh+j02yX/JzlyhLYbV3YQCn/zvES3JnY7TifHHvvr1w5hTDluNKMkV05cs4vy8Q7sw==",
+          "dev": true,
+          "requires": {
+            "caniuse-lite": "^1.0.30001181",
+            "colorette": "^1.2.1",
+            "electron-to-chromium": "^1.3.649",
+            "escalade": "^3.1.1",
+            "node-releases": "^1.1.70"
+          }
+        },
+        "chalk": {
+          "version": "2.4.2",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
+          "integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "^3.2.1",
+            "escape-string-regexp": "^1.0.5",
+            "supports-color": "^5.3.0"
+          },
+          "dependencies": {
+            "supports-color": {
+              "version": "5.5.0",
+              "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+              "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+              "dev": true,
+              "requires": {
+                "has-flag": "^3.0.0"
+              }
+            }
+          }
+        },
+        "electron-to-chromium": {
+          "version": "1.3.678",
+          "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.3.678.tgz",
+          "integrity": "sha512-E5ha1pE9+aWWrT2fUD5wdPBWUnYtKnEnloewbtVyrkAs79HvodOiNO4rMR94+hKbxgMFQG4fnPQACOc1cfMfBg==",
+          "dev": true
+        },
+        "has-flag": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+          "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
+          "dev": true
+        },
+        "postcss": {
+          "version": "7.0.35",
+          "resolved": "https://registry.npmjs.org/postcss/-/postcss-7.0.35.tgz",
+          "integrity": "sha512-3QT8bBJeX/S5zKTTjTCIjRF3If4avAT6kqxcASlTWEtAFCb9NH0OUxNDfgZSWdP5fJnBYCMEWkIFfWeugjzYMg==",
+          "dev": true,
+          "requires": {
+            "chalk": "^2.4.2",
+            "source-map": "^0.6.1",
+            "supports-color": "^6.1.0"
+          }
+        },
+        "postcss-value-parser": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/postcss-value-parser/-/postcss-value-parser-4.1.0.tgz",
+          "integrity": "sha512-97DXOFbQJhk71ne5/Mt6cOu6yxsSfM0QGQyl0L25Gca4yGWEGJaig7l7gbCX623VqTBNGLRLaVUCnNkcedlRSQ==",
+          "dev": true
+        },
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "dev": true
+        },
+        "supports-color": {
+          "version": "6.1.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-6.1.0.tgz",
+          "integrity": "sha512-qe1jfm1Mg7Nq/NSh6XE24gPXROEVsWHxC1LIx//XNlD9iw7YZQGjZNjYN7xGaEG6iKdA8EtNFW6R0gjnVXp+wQ==",
+          "dev": true,
+          "requires": {
+            "has-flag": "^3.0.0"
+          }
+        }
       }
     },
     "babel-cli": {
@@ -1632,6 +1723,12 @@
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       "dev": true
     },
+    "caniuse-lite": {
+      "version": "1.0.30001194",
+      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001194.tgz",
+      "integrity": "sha512-iDUOH+oFeBYk5XawYsPtsx/8fFpndAPUQJC7gBTfxHM8xw5nOZv7ceAD4frS1MKCLUac7QL5wdAJiFQlDRjXlA==",
+      "dev": true
+    },
     "case-sensitive-paths-webpack-plugin": {
       "version": "1.1.4",
       "resolved": "https://registry.npmjs.org/case-sensitive-paths-webpack-plugin/-/case-sensitive-paths-webpack-plugin-1.1.4.tgz",
@@ -1853,6 +1950,12 @@
         "color-name": "^1.0.0"
       }
     },
+    "colorette": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/colorette/-/colorette-1.2.2.tgz",
+      "integrity": "sha512-MKGMzyfeuutC/ZJ1cba9NqcNpfeqMUcYmyF1ZFY6/Cn7CNSAKx6a+s48sqLqyAiZuaP2TcqMhoo+dlwFnVxT9w==",
+      "dev": true
+    },
     "colormin": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/colormin/-/colormin-1.1.2.tgz",
@@ -2155,6 +2258,22 @@
         "postcss-unique-selectors": "^2.0.2",
         "postcss-value-parser": "^3.2.3",
         "postcss-zindex": "^2.0.1"
+      },
+      "dependencies": {
+        "autoprefixer": {
+          "version": "6.7.7",
+          "resolved": "https://registry.npmjs.org/autoprefixer/-/autoprefixer-6.7.7.tgz",
+          "integrity": "sha1-Hb0cg1ZY41zj+ZhAmdsAWFx4IBQ=",
+          "dev": true,
+          "requires": {
+            "browserslist": "^1.7.6",
+            "caniuse-db": "^1.0.30000634",
+            "normalize-range": "^0.1.2",
+            "num2fraction": "^1.2.2",
+            "postcss": "^5.2.16",
+            "postcss-value-parser": "^3.2.3"
+          }
+        }
       }
     },
     "csso": {
@@ -2610,6 +2729,12 @@
         "es6-symbol": "^3.1.1"
       }
     },
+    "escalade": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/escalade/-/escalade-3.1.1.tgz",
+      "integrity": "sha512-k0er2gUkLf8O0zKJiAhmkTnJlTvINGv7ygDNPbeIsX/TJjGJZHuh9B2UxbsaEkmlEo9MfhrSzmhIlhRlI2GXnw==",
+      "dev": true
+    },
     "escape-html": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
@@ -5009,6 +5134,12 @@
         }
       }
     },
+    "node-releases": {
+      "version": "1.1.71",
+      "resolved": "https://registry.npmjs.org/node-releases/-/node-releases-1.1.71.tgz",
+      "integrity": "sha512-zR6HoT6LrLCRBwukmrVbHv0EpEQjksO6GmFcZQQuCAy139BEsoVKPYnf3jongYW83fAa1torLGYwxxky/p28sg==",
+      "dev": true
+    },
     "nopt": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/nopt/-/nopt-2.1.2.tgz",
diff --git a/package.json b/package.json
index e361830..b2590ac 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "popup"
   ],
   "devDependencies": {
-    "autoprefixer": "^6.4.0",
+    "autoprefixer": "^9.8.6",
     "babel-cli": "6.26.0",
     "babel-eslint": "^6.1.2",
     "babel-loader": "^6.2.5",