diff --git a/buildbot/master.cfg b/buildbot/master.cfg
index a11ec22a..b764b066 100644
--- a/buildbot/master.cfg
+++ b/buildbot/master.cfg
@@ -99,6 +99,8 @@ c['schedulers'].append( SingleBranchScheduler(
                                           "build-osx-py35",
                                           "build-gtk-py27",
                                           "build-gtk-py33",
+                                          "build-gtk3-py27",
+                                          "build-gtk3-py33",
                                           ]))
 
 
@@ -138,6 +140,8 @@ c['schedulers'].append( ForceScheduler(
                                           "build-osx-py35",
                                           "build-gtk-py27",
                                           "build-gtk-py33",
+                                          "build-gtk3-py27",
+                                          "build-gtk3-py33",
                                           "dist-osx-py27",
                                           "dist-osx-py34",
                                           "dist-osx-py35",
@@ -213,6 +217,8 @@ def makeFactory(port, buildType='buildOnly', pyVer='2.7'):
             else:
                 # Build both architectures for the distribution builders
                 cmd += ' --mac_arch=i386,x86_64'
+        if port == 'gtk3':
+            cmd += ' --gtk3'
         if port in ['win32', 'win64']:
             cmd += ' --cairo'
         if port == 'win64':
@@ -277,6 +283,14 @@ c['builders'] = [
                       slavenames=["ubuntu-x64_86-py27"],
                       factory=makeFactory('gtk', pyVer='3.3')),
 
+        BuilderConfig(name="build-gtk3-py27",
+                      slavenames=["ubuntu-x64_86-py27"],
+                      factory=makeFactory('gtk3')),
+
+        BuilderConfig(name="build-gtk3-py33",
+                      slavenames=["ubuntu-x64_86-py27"],
+                      factory=makeFactory('gtk3', pyVer='3.3')),
+
 
 
         BuilderConfig(name="build-docs",