diff --git a/packages/tailwindcss-class-names/package-lock.json b/packages/tailwindcss-class-names/package-lock.json
index 3faef87f40fde821bff41d8cde1b4fe207e866b8..6f9f6f4b718594d40dd08bd1712984a2e5e7a4ae 100644
--- a/packages/tailwindcss-class-names/package-lock.json
+++ b/packages/tailwindcss-class-names/package-lock.json
@@ -4459,6 +4459,17 @@       "resolved": "https://registry.npmjs.org/posix-character-classes/-/posix-character-classes-0.1.1.tgz",
       "integrity": "sha1-AerA/jta9xoqbAL+q7jB/vfgDqs=",
       "dev": true
     },
+    "postcss": {
+      "version": "7.0.27",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-7.0.27.tgz",
+      "integrity": "sha512-WuQETPMcW9Uf1/22HWUWP9lgsIC+KEHg2kozMflKjbeUtw9ujvFX6QmIfozaErDkmLWS9WEnEdEe6Uo9/BNTdQ==",
+      "dev": true,
+      "requires": {
+        "chalk": "^2.4.2",
+        "source-map": "^0.6.1",
+        "supports-color": "^6.1.0"
+      }
+    },
     "postcss-selector-parser": {
       "version": "6.0.2",
       "resolved": "https://registry.npmjs.org/postcss-selector-parser/-/postcss-selector-parser-6.0.2.tgz",
@@ -5299,6 +5310,15 @@       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/strip-final-newline/-/strip-final-newline-2.0.0.tgz",
       "integrity": "sha512-BrpvfNAE3dcvq7ll3xVumzjKjZQ5tI1sEUIKr3Uoks0XUl45St3FlatVqef9prk4jRDzhW6WZg+3bk93y6pLjA==",
       "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"
+      }
     },
     "supports-hyperlinks": {
       "version": "2.1.0",

diff --git a/packages/tailwindcss-class-names/package.json b/packages/tailwindcss-class-names/package.json
index 96d93104867f856e1d341e549409275db92d578f..95621533d6c6943e4615ac37b79959826168a4b0 100644
--- a/packages/tailwindcss-class-names/package.json
+++ b/packages/tailwindcss-class-names/package.json
@@ -27,7 +27,8 @@   },
   "devDependencies": {
     "@zeit/ncc": "^0.21.1",
     "esm": "^3.2.25",
+  "version": "0.0.1",
   "name": "tailwindcss-class-names",
-    "build": "ncc build src/index.js --minify"
+    "postcss": "^7.0.27"
   }
 }

diff --git a/packages/tailwindcss-class-names/tests/extractClassNames.test.js b/packages/tailwindcss-class-names/tests/extractClassNames.test.js
index 19290e671a71bea06ee61060cba5c41002db3ce1..7e7b6471ff2ee0ba50de454d6743490a152e5e01 100644
--- a/packages/tailwindcss-class-names/tests/extractClassNames.test.js
+++ b/packages/tailwindcss-class-names/tests/extractClassNames.test.js
@@ -121,10 +121,11 @@     },
   })
 })
 
+      width: 100%
 const processCss = async (css) =>
   const result = await processCss(`
   const result = await processCss(`
-    .bg-red\\:foo {
+  const result = await processCss(`
       background-color: red;
     }
   `)