diff --git a/assets/scripts/app/helpers/urls.coffee b/assets/scripts/app/helpers/urls.coffee
index 06dde98a..2bb58c24 100644
--- a/assets/scripts/app/helpers/urls.coffee
+++ b/assets/scripts/app/helpers/urls.coffee
@@ -25,3 +25,6 @@
 
   email: (email) ->
     "mailto:#{email}"
+
+  gravatarImage: (email, size) ->
+    "https://www.gravatar.com/avatar/#{md5(email)}?s=#{size}&d=#{encodeURIComponent(Travis.config.avatar_default_url)}"
diff --git a/assets/scripts/app/templates/builds/show.hbs b/assets/scripts/app/templates/builds/show.hbs
index aee204f7..2062cfa7 100644
--- a/assets/scripts/app/templates/builds/show.hbs
+++ b/assets/scripts/app/templates/builds/show.hbs
@@ -31,10 +31,10 @@
     <div class="footer">
       <div class="author">
         {{#if commit.authorName}}
-          <div><img src="https://travis-ci.org/images/mailer/mascot-avatar-40px.png"/>{{commit.authorName}} authored</div>
+          <div class="authored"><img {{bind-attr src="view.urlAuthorGravatarImage"}}/>{{commit.authorName}} authored</div>
         {{/if}}
         {{#if commit.committerName}}
-          <div><img src="https://travis-ci.org/images/mailer/mascot-avatar-40px.png"/>{{commit.committerName}} committed</div>
+          <div class="committed"><img {{bind-attr src="view.urlCommitterGravatarImage"}}/>{{commit.committerName}} committed</div>
         {{/if}}
       </div>
 
diff --git a/assets/scripts/app/views/build.coffee b/assets/scripts/app/views/build.coffee
index 287526b4..6868b48c 100644
--- a/assets/scripts/app/views/build.coffee
+++ b/assets/scripts/app/views/build.coffee
@@ -48,9 +48,19 @@ Travis.reopen
   BuildView: Travis.View.extend
     templateName: 'builds/show'
     classNameBindings: ['color', 'loading']
+    buildBinding: 'controller.build'
+    commitBinding: 'build.commit'
+
+    urlCommitterGravatarImage: (->
+      Travis.Urls.gravatarImage(@get('commit.committerEmail'), 40)
+    ).property('commit.committerEmail')
+
+    urlAuthorGravatarImage: (->
+      Travis.Urls.gravatarImage(@get('commit.authorEmail'), 40)
+    ).property('commit.authorEmail')
 
     loadingBinding: 'controller.loading'
 
     color: (->
-      Travis.Helpers.colorForState(@get('controller.build.state'))
-    ).property('controller.build.state')
+      Travis.Helpers.colorForState(@get('build.state'))
+    ).property('build.state')
diff --git a/assets/scripts/spec/integration/build_spec.coffee b/assets/scripts/spec/integration/build_spec.coffee
index 69f5ce14..d5640cff 100644
--- a/assets/scripts/spec/integration/build_spec.coffee
+++ b/assets/scripts/spec/integration/build_spec.coffee
@@ -26,6 +26,11 @@ test "displaying information on build page", ->
       duration: '30 sec'
       message: 'commit message 1'
 
+    displaysSummaryGravatars
+      authorEmail: 'author@email.com'
+      committerEmail: 'committer@email.com'
+
+
     displaysTabs
       current: { href: '/travis-ci/travis-core' }
       builds:  { href: '/travis-ci/travis-core/builds' }
diff --git a/assets/scripts/spec/support/expectations.coffee b/assets/scripts/spec/support/expectations.coffee
index 60c3be99..c2033636 100644
--- a/assets/scripts/spec/support/expectations.coffee
+++ b/assets/scripts/spec/support/expectations.coffee
@@ -41,6 +41,13 @@
   element = $('#new-summary .subject')
   equal(element.text().trim(), data.message)
 
+@displaysSummaryGravatars = (data) ->
+  element = $('#new-summary .author .committed img')
+  equal(element.attr('src'), Travis.Urls.gravatarImage(data.committerEmail, 40))
+
+  element = $('#new-summary .author .authored img')
+  equal(element.attr('src'), Travis.Urls.gravatarImage(data.authorEmail, 40))
+
 @displaysLog = (lines) ->
   log = lines.join('')
   equal($('#log p').text().trim(), log)
diff --git a/assets/scripts/travis.coffee b/assets/scripts/travis.coffee
index 6c4453aa..f209166a 100644
--- a/assets/scripts/travis.coffee
+++ b/assets/scripts/travis.coffee
@@ -83,6 +83,7 @@ $.extend Travis,
     code_climate: $('meta[name="travis.code_climate"]').attr('value')
     code_climate_url: $('meta[name="travis.code_climate_url"]').attr('value')
     show_repos_hint: 'private'
+    avatar_default_url: 'https://travis-ci.org/images/mailer/mascot-avatar-40px.png'
 
   CONFIG_KEYS_MAP: {
     go:          'Go'
diff --git a/assets/scripts/vendor/md5.min.js b/assets/scripts/vendor/md5.min.js
new file mode 100644
index 00000000..11b15456
--- /dev/null
+++ b/assets/scripts/vendor/md5.min.js
@@ -0,0 +1 @@
+!function(a){"use strict";function b(a,b){var c=(65535&a)+(65535&b),d=(a>>16)+(b>>16)+(c>>16);return d<<16|65535&c}function c(a,b){return a<<b|a>>>32-b}function d(a,d,e,f,g,h){return b(c(b(b(d,a),b(f,h)),g),e)}function e(a,b,c,e,f,g,h){return d(b&c|~b&e,a,b,f,g,h)}function f(a,b,c,e,f,g,h){return d(b&e|c&~e,a,b,f,g,h)}function g(a,b,c,e,f,g,h){return d(b^c^e,a,b,f,g,h)}function h(a,b,c,e,f,g,h){return d(c^(b|~e),a,b,f,g,h)}function i(a,c){a[c>>5]|=128<<c%32,a[(c+64>>>9<<4)+14]=c;var d,i,j,k,l,m=1732584193,n=-271733879,o=-1732584194,p=271733878;for(d=0;d<a.length;d+=16)i=m,j=n,k=o,l=p,m=e(m,n,o,p,a[d],7,-680876936),p=e(p,m,n,o,a[d+1],12,-389564586),o=e(o,p,m,n,a[d+2],17,606105819),n=e(n,o,p,m,a[d+3],22,-1044525330),m=e(m,n,o,p,a[d+4],7,-176418897),p=e(p,m,n,o,a[d+5],12,1200080426),o=e(o,p,m,n,a[d+6],17,-1473231341),n=e(n,o,p,m,a[d+7],22,-45705983),m=e(m,n,o,p,a[d+8],7,1770035416),p=e(p,m,n,o,a[d+9],12,-1958414417),o=e(o,p,m,n,a[d+10],17,-42063),n=e(n,o,p,m,a[d+11],22,-1990404162),m=e(m,n,o,p,a[d+12],7,1804603682),p=e(p,m,n,o,a[d+13],12,-40341101),o=e(o,p,m,n,a[d+14],17,-1502002290),n=e(n,o,p,m,a[d+15],22,1236535329),m=f(m,n,o,p,a[d+1],5,-165796510),p=f(p,m,n,o,a[d+6],9,-1069501632),o=f(o,p,m,n,a[d+11],14,643717713),n=f(n,o,p,m,a[d],20,-373897302),m=f(m,n,o,p,a[d+5],5,-701558691),p=f(p,m,n,o,a[d+10],9,38016083),o=f(o,p,m,n,a[d+15],14,-660478335),n=f(n,o,p,m,a[d+4],20,-405537848),m=f(m,n,o,p,a[d+9],5,568446438),p=f(p,m,n,o,a[d+14],9,-1019803690),o=f(o,p,m,n,a[d+3],14,-187363961),n=f(n,o,p,m,a[d+8],20,1163531501),m=f(m,n,o,p,a[d+13],5,-1444681467),p=f(p,m,n,o,a[d+2],9,-51403784),o=f(o,p,m,n,a[d+7],14,1735328473),n=f(n,o,p,m,a[d+12],20,-1926607734),m=g(m,n,o,p,a[d+5],4,-378558),p=g(p,m,n,o,a[d+8],11,-2022574463),o=g(o,p,m,n,a[d+11],16,1839030562),n=g(n,o,p,m,a[d+14],23,-35309556),m=g(m,n,o,p,a[d+1],4,-1530992060),p=g(p,m,n,o,a[d+4],11,1272893353),o=g(o,p,m,n,a[d+7],16,-155497632),n=g(n,o,p,m,a[d+10],23,-1094730640),m=g(m,n,o,p,a[d+13],4,681279174),p=g(p,m,n,o,a[d],11,-358537222),o=g(o,p,m,n,a[d+3],16,-722521979),n=g(n,o,p,m,a[d+6],23,76029189),m=g(m,n,o,p,a[d+9],4,-640364487),p=g(p,m,n,o,a[d+12],11,-421815835),o=g(o,p,m,n,a[d+15],16,530742520),n=g(n,o,p,m,a[d+2],23,-995338651),m=h(m,n,o,p,a[d],6,-198630844),p=h(p,m,n,o,a[d+7],10,1126891415),o=h(o,p,m,n,a[d+14],15,-1416354905),n=h(n,o,p,m,a[d+5],21,-57434055),m=h(m,n,o,p,a[d+12],6,1700485571),p=h(p,m,n,o,a[d+3],10,-1894986606),o=h(o,p,m,n,a[d+10],15,-1051523),n=h(n,o,p,m,a[d+1],21,-2054922799),m=h(m,n,o,p,a[d+8],6,1873313359),p=h(p,m,n,o,a[d+15],10,-30611744),o=h(o,p,m,n,a[d+6],15,-1560198380),n=h(n,o,p,m,a[d+13],21,1309151649),m=h(m,n,o,p,a[d+4],6,-145523070),p=h(p,m,n,o,a[d+11],10,-1120210379),o=h(o,p,m,n,a[d+2],15,718787259),n=h(n,o,p,m,a[d+9],21,-343485551),m=b(m,i),n=b(n,j),o=b(o,k),p=b(p,l);return[m,n,o,p]}function j(a){var b,c="";for(b=0;b<32*a.length;b+=8)c+=String.fromCharCode(a[b>>5]>>>b%32&255);return c}function k(a){var b,c=[];for(c[(a.length>>2)-1]=void 0,b=0;b<c.length;b+=1)c[b]=0;for(b=0;b<8*a.length;b+=8)c[b>>5]|=(255&a.charCodeAt(b/8))<<b%32;return c}function l(a){return j(i(k(a),8*a.length))}function m(a,b){var c,d,e=k(a),f=[],g=[];for(f[15]=g[15]=void 0,e.length>16&&(e=i(e,8*a.length)),c=0;16>c;c+=1)f[c]=909522486^e[c],g[c]=1549556828^e[c];return d=i(f.concat(k(b)),512+8*b.length),j(i(g.concat(d),640))}function n(a){var b,c,d="0123456789abcdef",e="";for(c=0;c<a.length;c+=1)b=a.charCodeAt(c),e+=d.charAt(b>>>4&15)+d.charAt(15&b);return e}function o(a){return unescape(encodeURIComponent(a))}function p(a){return l(o(a))}function q(a){return n(p(a))}function r(a,b){return m(o(a),o(b))}function s(a,b){return n(r(a,b))}function t(a,b,c){return b?c?r(b,a):s(b,a):c?p(a):q(a)}"function"==typeof define&&define.amd?define(function(){return t}):a.md5=t}(this);
\ No newline at end of file