diff --git a/.all-contributorsrc b/.all-contributorsrc
index 5287317..2fcf444 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -2,6 +2,7 @@
   "projectOwner": "jfmengels"
 , "projectName": "all-contributors-cli"
 , "imageSize": 100
+, "commit": true
 , "contributors": [
     {
       "login": "jfmengels"
diff --git a/cli.js b/cli.js
index e02cdb2..581bae3 100755
--- a/cli.js
+++ b/cli.js
@@ -8,7 +8,7 @@ var yargs = require('yargs');
 
 var init = require('./lib/init');
 var generate = require('./lib/generate');
-var markdown = require('./lib/util').markdown;
+var util = require('./lib/util');
 var updateContributors = require('./lib/contributors');
 
 var cwd = process.cwd();
@@ -23,6 +23,7 @@ var argv = yargs
   .usage('Usage: $0 add <username> <contribution>')
   .command('init', 'Prepare the project to be used with this tool')
   .usage('Usage: $0 init')
+  .boolean('commit')
   .default('files', ['README.md'])
   .default('contributorsPerLine', 7)
   .default('contributors', [])
@@ -45,12 +46,12 @@ function startGeneration(argv, cb) {
       return path.join(cwd, file);
     })
     .forEach(function (file) {
-      markdown.read(file, function (error, fileContent) {
+      util.markdown.read(file, function (error, fileContent) {
         if (error) {
           return cb(error);
         }
         var newFileContent = generate(argv, argv.contributors, fileContent);
-        markdown.write(file, newFileContent, cb);
+        util.markdown.write(file, newFileContent, cb);
       });
     });
 }
@@ -59,12 +60,20 @@ function addContribution(argv, cb) {
   var username = argv._[1];
   var contributions = argv._[2];
   // Add or update contributor in the config file
-  updateContributors(argv, username, contributions, function (error, contributors) {
+  updateContributors(argv, username, contributions, function (error, data) {
     if (error) {
       return onError(error);
     }
-    argv.contributors = contributors;
-    startGeneration(argv, cb);
+    argv.contributors = data.contributors;
+    startGeneration(argv, function (error) {
+      if (error) {
+        return cb(error);
+      }
+      if (!argv.commit) {
+        return cb();
+      }
+      return util.git.commit(argv, data, cb);
+    });
   });
 }
 
diff --git a/lib/contributors/index.js b/lib/contributors/index.js
index cddf8e1..4f0377a 100644
--- a/lib/contributors/index.js
+++ b/lib/contributors/index.js
@@ -1,10 +1,15 @@
 'use strict';
 
+var _ = require('lodash/fp');
 var util = require('../util');
 var add = require('./add');
 var github = require('./github');
 var prompt = require('./prompt');
 
+function isNewContributor(contributorList, username) {
+  return !_.find({login: username}, contributorList);
+}
+
 module.exports = function addContributor(options, username, contributions, cb) {
   prompt(options, username, contributions, function (answers) {
     add(options, answers.username, answers.contributions, github, function (error, contributors) {
@@ -12,7 +17,12 @@ module.exports = function addContributor(options, username, contributions, cb) {
         return cb(error);
       }
       util.configFile.writeContributors(options.config, contributors, function (error) {
-        return cb(error, contributors);
+        return cb(error, {
+          username: answers.username,
+          contributions: answers.contributions,
+          contributors: contributors,
+          newContributor: isNewContributor(options.contributors, answers.username)
+        });
       });
     });
   });
diff --git a/lib/init/prompt.js b/lib/init/prompt.js
index 7ba0ecd..2a051fa 100644
--- a/lib/init/prompt.js
+++ b/lib/init/prompt.js
@@ -2,7 +2,7 @@
 
 var _ = require('lodash/fp');
 var inquirer = require('inquirer');
-var getRepoInfo = require('../util').git;
+var git = require('../util').git;
 
 var questions = [{
   type: 'input',
@@ -45,7 +45,7 @@ var uniqueFiles = _.flow(
 );
 
 module.exports = function prompt(cb) {
-  getRepoInfo(function (error, repoInfo) {
+  git.getRepoInfo(function (error, repoInfo) {
     if (error) {
       return cb(error);
     }
diff --git a/lib/util/git.js b/lib/util/git.js
index f83cfde..5d86260 100644
--- a/lib/util/git.js
+++ b/lib/util/git.js
@@ -1,5 +1,9 @@
 'use strict';
 
+var _ = require('lodash/fp');
+
+var commitTemplate = '<%= (newContributor ? "Add" : "Update") %> <%= username %> as a contributor';
+
 var spawn = require('child_process').spawn;
 
 function getRemoteOriginData(cb) {
@@ -23,11 +27,32 @@ function parse(originUrl) {
   };
 }
 
-module.exports = function getRepoInfo(cb) {
+function getRepoInfo(cb) {
   getRemoteOriginData(function (error, originUrl) {
     if (error) {
       return cb(error);
     }
     return cb(null, parse(originUrl));
   });
+}
+
+function spawnCommand(args, cb) {
+  var git = spawn('git', args);
+  git.stderr.on('data', cb);
+  git.on('close', cb);
+}
+
+function commit(options, data, cb) {
+  spawnCommand(['add', '.'], function (error) {
+    if (error) {
+      return cb(error);
+    }
+    var commitMessage = _.template(options.commitTemplate || commitTemplate)(data);
+    spawnCommand(['commit', '-m', commitMessage], cb);
+  });
+}
+
+module.exports = {
+  commit: commit,
+  getRepoInfo: getRepoInfo
 };