diff --git a/spec/lib/rufo/formatter_source_specs/method_definition.rb.spec b/spec/lib/rufo/formatter_source_specs/method_definition.rb.spec
index c0d995be..bdf487f8 100644
--- a/spec/lib/rufo/formatter_source_specs/method_definition.rb.spec
+++ b/spec/lib/rufo/formatter_source_specs/method_definition.rb.spec
@@ -371,3 +371,13 @@ end
 def foo(a, ...)
   p(...)
 end
+
+#~# ORIGINAL issue_331
+def foo a:
+  a
+end
+
+#~# EXPECTED
+def foo(a:)
+  a
+end
diff --git a/spec/lib/rufo/formatter_source_specs/method_definition_with_receiver.rb.spec b/spec/lib/rufo/formatter_source_specs/method_definition_with_receiver.rb.spec
index c497d363..48e4416c 100644
--- a/spec/lib/rufo/formatter_source_specs/method_definition_with_receiver.rb.spec
+++ b/spec/lib/rufo/formatter_source_specs/method_definition_with_receiver.rb.spec
@@ -65,3 +65,18 @@ def a x;x end;def b y;y end;def c z;z end # comment
 def a(x); x end
 def b(y); y end
 def c(z); z end # comment
+
+#~# ORIGINAL issue_331
+#~# parens_in_def: :dynamic
+class User
+  def self.by_uid uid:
+    joins(:authentications).where(authentications: { uid: }).first
+  end
+end
+
+#~# EXPECTED
+class User
+  def self.by_uid uid:
+    joins(:authentications).where(authentications: { uid: }).first
+  end
+end