diff --git a/package-lock.json b/package-lock.json
index 459a4fa..071b51e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "spike-css-standards",
-  "version": "4.0.0",
+  "version": "4.1.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -499,22 +499,50 @@
       "dev": true
     },
     "autoprefixer": {
-      "version": "9.3.1",
-      "resolved": "https://registry.npmjs.org/autoprefixer/-/autoprefixer-9.3.1.tgz",
-      "integrity": "sha512-DY9gOh8z3tnCbJ13JIWaeQsoYncTGdsrgCceBaQSIL4nvdrLxgbRSBPevg2XbX7u4QCSfLheSJEEIUUSlkbx6Q==",
+      "version": "9.4.3",
+      "resolved": "https://registry.npmjs.org/autoprefixer/-/autoprefixer-9.4.3.tgz",
+      "integrity": "sha512-/XSnzDepRkAU//xLcXA/lUWxpsBuw0WiriAHOqnxkuCtzLhaz+fL4it4gp20BQ8n5SyLzK/FOc7A0+u/rti2FQ==",
       "requires": {
-        "browserslist": "^4.3.3",
-        "caniuse-lite": "^1.0.30000898",
+        "browserslist": "^4.3.6",
+        "caniuse-lite": "^1.0.30000921",
         "normalize-range": "^0.1.2",
         "num2fraction": "^1.2.2",
-        "postcss": "^7.0.5",
+        "postcss": "^7.0.6",
         "postcss-value-parser": "^3.3.1"
       },
       "dependencies": {
+        "browserslist": {
+          "version": "4.3.6",
+          "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.3.6.tgz",
+          "integrity": "sha512-kMGKs4BTzRWviZ8yru18xBpx+CyHG9eqgRbj9XbE3IMgtczf4aiA0Y1YCpVdvUieKGZ03kolSPXqTcscBCb9qw==",
+          "requires": {
+            "caniuse-lite": "^1.0.30000921",
+            "electron-to-chromium": "^1.3.92",
+            "node-releases": "^1.1.1"
+          }
+        },
+        "caniuse-lite": {
+          "version": "1.0.30000921",
+          "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30000921.tgz",
+          "integrity": "sha512-Bu09ciy0lMWLgpYC77I0YGuI8eFRBPPzaSOYJK1jTI64txCphYCqnWbxJYjHABYVt/TYX/p3jNjLBR87u1Bfpw=="
+        },
+        "electron-to-chromium": {
+          "version": "1.3.92",
+          "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.3.92.tgz",
+          "integrity": "sha512-En051LMzMl3/asMWGZEtU808HOoVWIpmmZx1Ep8N+TT9e7z/X8RcLeBU2kLSNLGQ+5SuKELzMx+MVuTBXk6Q9w=="
+        },
+        "node-releases": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/node-releases/-/node-releases-1.1.1.tgz",
+          "integrity": "sha512-2UXrBr6gvaebo5TNF84C66qyJJ6r0kxBObgZIDX3D3/mt1ADKiHux3NJPWisq0wxvJJdkjECH+9IIKYViKj71Q==",
+          "requires": {
+            "semver": "^5.3.0"
+          }
+        },
         "postcss": {
-          "version": "7.0.5",
-          "resolved": "https://registry.npmjs.org/postcss/-/postcss-7.0.5.tgz",
-          "integrity": "sha512-HBNpviAUFCKvEh7NZhw1e8MBPivRszIiUnhrJ+sBFVSYSqubrzwX3KG51mYgcRHX8j/cAgZJedONZcm5jTBdgQ==",
+          "version": "7.0.6",
+          "resolved": "https://registry.npmjs.org/postcss/-/postcss-7.0.6.tgz",
+          "integrity": "sha512-Nq/rNjnHFcKgCDDZYO0lNsl6YWe6U7tTy+ESN+PnLxebL8uBtYX59HZqvrj7YLK5UCyll2hqDsJOo3ndzEW8Ug==",
           "requires": {
             "chalk": "^2.4.1",
             "source-map": "^0.6.1",
@@ -3165,12 +3193,14 @@
         "balanced-match": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
@@ -3185,17 +3215,20 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -3325,6 +3358,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -3339,6 +3373,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
@@ -3346,12 +3381,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.2.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.1",
             "yallist": "^3.0.0"
@@ -3370,6 +3407,7 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -3450,7 +3488,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -3462,6 +3501,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -3583,6 +3623,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -5302,6 +5343,7 @@
           "version": "0.1.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "kind-of": "^3.0.2",
             "longest": "^1.0.1",
@@ -5626,7 +5668,8 @@
         "is-buffer": {
           "version": "1.1.6",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "is-builtin-module": {
           "version": "1.0.0",
@@ -5710,6 +5753,7 @@
           "version": "3.2.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "is-buffer": "^1.1.5"
           }
@@ -5756,7 +5800,8 @@
         "longest": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "lru-cache": {
           "version": "4.1.3",
@@ -6022,7 +6067,8 @@
         "repeat-string": {
           "version": "1.6.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "require-directory": {
           "version": "2.1.1",
diff --git a/package.json b/package.json
index 8c2bd01..5de46cc 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
   },
   "bugs": "https://github.com/static-dev/spike-css-standards/issues",
   "dependencies": {
-    "autoprefixer": "9.3.1",
+    "autoprefixer": "9.4.3",
     "cssnano": "4.1.7",
     "postcss-attribute-case-insensitive": "4.0.0",
     "postcss-calc": "7.0.1",