diff --git a/lib/twitter/base.rb b/lib/twitter/base.rb
index e484cd744..97410aa66 100644
--- a/lib/twitter/base.rb
+++ b/lib/twitter/base.rb
@@ -157,6 +157,11 @@ def update_profile_colors(colors={})
       perform_post('/account/update_profile_colors.json', :body => colors)
     end
     
+    # file should respond to #read and #path
+    def update_profile_image(file)
+      perform_post('/account/update_profile_image.json', build_multipart_bodies(:image => file))
+    end
+
     # file should respond to #read and #path
     def update_profile_background(file, tile = false)
       perform_post('/account/update_profile_background_image.json', build_multipart_bodies(:image => file).merge(:tile => tile))
diff --git a/test/twitter/base_test.rb b/test/twitter/base_test.rb
index eeed6c342..af704f492 100644
--- a/test/twitter/base_test.rb
+++ b/test/twitter/base_test.rb
@@ -177,6 +177,12 @@ class BaseTest < Test::Unit::TestCase
         blocked.last.screen_name.should == "euciavkvyplx"
       end
 
+      should "upload a profile image" do
+        stub_post('/account/update_profile_image.json', 'update_profile_image.json')
+        user = @twitter.update_profile_image(File.new(sample_image('sample-image.png')))
+        user.name.should == 'John Nunemaker' # update_profile_image responds with the user
+      end
+
       should "upload a background image" do
         stub_post('/account/update_profile_background_image.json', 'update_profile_background_image.json')
         user = @twitter.update_profile_background(File.new(sample_image('sample-image.png')))