diff --git a/package.json b/package.json
index eb61021a8..d91f99a30 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "chalk": "^2.3.0",
     "chokidar": "^2.0.4",
     "concat-stream": "^1.6.0",
-    "disparity": "^2.0.0",
+    "diff": "^4.0.1",
     "doctrine-temporary-fork": "2.1.0",
     "get-port": "^4.0.0",
     "git-url-parse": "^10.0.1",
diff --git a/src/commands/readme.js b/src/commands/readme.js
index a7591b8d3..11e81d351 100644
--- a/src/commands/readme.js
+++ b/src/commands/readme.js
@@ -5,7 +5,7 @@ const documentation = require('../');
 const sharedOptions = require('./shared_options');
 const inject = require('mdast-util-inject');
 const chalk = require('chalk');
-const disparity = require('disparity');
+const diff = require('diff');
 const getReadmeFile = require('../get-readme-file');
 
 module.exports.command = 'readme [input..]';
@@ -94,22 +94,48 @@ module.exports.handler = function readme(argv) {
         .process(readmeContent)
     )
     .then(file => {
-      const diffOutput = disparity.unified(readmeContent, file.contents, {
-        paths: [argv.readmeFile, argv.readmeFile]
-      });
-      if (!diffOutput.length) {
+      const diffRaw = diff.createPatch(
+        '',
+        readmeContent,
+        file.contents,
+        '',
+        ''
+      );
+      if (!diffRaw.length) {
         log(`${argv.readmeFile} is up to date.`);
         process.exit(0);
       }
 
+      // Replace diff headers with real values
+      const cleanedDiff = diffRaw
+        .replace(/^([^\n]+)\n([^\n]+)\n/m, '')
+        .replace(/^---.*/gm, `--- ${argv.readmeFile}\tremoved`)
+        .replace(/^\+\+\+.*/gm, `+++ ${argv.readmeFile}\tadded`);
+
+      // Includes newlines for easier joins
+      const diffLines = cleanedDiff.split(/^/m);
+      const diffHeader = diffLines
+        .slice(0, 2)
+        .join('')
+        .replace(/[^\n\r]+/g, chalk.yellow('$&'));
+      const diffBody = diffLines
+        .slice(2)
+        .join('')
+        .replace(/^-[^\n\r]*/gm, chalk.red('$&'))
+        .replace(/^\+[^\n\r]*/gm, chalk.green('$&'))
+        .replace(/^@@.+@@/gm, chalk.magenta('$&'));
+
       if (argv.d) {
         log(
           chalk.bold(`${argv.readmeFile} needs the following updates:`),
-          `\n${diffOutput}`
+          `\n${diffHeader}${diffBody}`
         );
         process.exit(1);
       } else {
-        log(chalk.bold(`Updating ${argv.readmeFile}`), `\n${diffOutput}`);
+        log(
+          chalk.bold(`Updating ${argv.readmeFile}`),
+          `\n${diffHeader}${diffBody}`
+        );
       }
 
       fs.writeFileSync(argv.readmeFile, file.contents);
diff --git a/yarn.lock b/yarn.lock
index 5c6b223de..284f472b1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -930,7 +930,7 @@ ansi-regex@^4.1.0:
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-4.1.0.tgz#8b9f8f08cf1acb843756a839ca8c7e3168c51997"
   integrity sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==
 
-ansi-styles@^2.0.1, ansi-styles@^2.2.1:
+ansi-styles@^2.2.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-2.2.1.tgz#b432dd3358b634cf75e1e4664368240533c1ddbe"
 
@@ -2070,20 +2070,14 @@ detective@^4.0.0:
     acorn "^5.2.1"
     defined "^1.0.0"
 
-diff@^1.3.2:
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/diff/-/diff-1.4.0.tgz#7f28d2eb9ee7b15a97efd89ce63dcfdaa3ccbabf"
-
 diff@^3.2.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
 
-disparity@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/disparity/-/disparity-2.0.0.tgz#57ddacb47324ae5f58d2cc0da886db4ce9eeb718"
-  dependencies:
-    ansi-styles "^2.0.1"
-    diff "^1.3.2"
+diff@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-4.0.1.tgz#0c667cb467ebbb5cea7f14f135cc2dba7780a8ff"
+  integrity sha512-s2+XdvhPCOF01LRQBC8hf4vhbVmI2CGS5aZnxLJlT5FtdhPCDFq80q++zK2KlrVorVDdL5BOGZ/VfLrVtYNF+Q==
 
 doctrine-temporary-fork@2.1.0:
   version "2.1.0"