diff --git a/lib/flickwerk/patch_finder.rb b/lib/flickwerk/patch_finder.rb
index 47a997a..ec18090 100644
--- a/lib/flickwerk/patch_finder.rb
+++ b/lib/flickwerk/patch_finder.rb
@@ -2,7 +2,7 @@
 
 module Flickwerk
   class PatchFinder
-    DECORATED_CLASS_PATTERN = /(?:::)?(?<decorated_class>[\w.:]+)\.prepend[\s(]/
+    DECORATED_CLASS_PATTERN = /(?:::)?(?<decorated_class>[\w.:]+?)(?:\.singleton_class)?\.prepend[\s(]/
 
     attr_reader :path, :autoloader
 
diff --git a/test/dummy_app/app/patches/models/user_class_methods_patch.rb b/test/dummy_app/app/patches/models/user_class_methods_patch.rb
new file mode 100644
index 0000000..6a61116
--- /dev/null
+++ b/test/dummy_app/app/patches/models/user_class_methods_patch.rb
@@ -0,0 +1,7 @@
+module UserClassMethodsPatch
+  def address
+    "The outer rim"
+  end
+
+  DummyApp.user_class.singleton_class.prepend(self)
+end
diff --git a/test/test_flickwerk.rb b/test/test_flickwerk.rb
index f547c72..b9b47fa 100644
--- a/test/test_flickwerk.rb
+++ b/test/test_flickwerk.rb
@@ -69,4 +69,11 @@ def boot
     assert UI::Button.new.respond_to?(:click)
     assert_equal "Button clicked!", UI::Button.new.click
   end
+
+  test "singleton classes can be patched" do
+    boot
+
+    assert User
+    assert "The outer rim", User.address
+  end
 end