manual/cops_sorbet.md in rubocop-sorbet-0.8.5 vs manual/cops_sorbet.md in rubocop-sorbet-0.8.6

@@ -757,9 +757,46 @@
   sig { void }
   def no_op; end
 end
 ```
 
+## Sorbet/Refinement
+
+Enabled by default | Safe | Supports autocorrection | VersionAdded | VersionChanged
+--- | --- | --- | --- | ---
+Enabled | Yes | No | <<next>> | -
+
+Checks for the use of Ruby Refinements library. Refinements add
+complexity and incur a performance penalty that can be significant
+for large code bases. Good examples are cases of unrelated
+methods that happen to have the same name as these module methods.
+
+### Examples
+
+```ruby
+# bad
+module Foo
+  refine(Date) do
+  end
+end
+
+# bad
+module Foo
+  using(Date) do
+  end
+end
+
+# good
+module Foo
+  bar.refine(Date)
+end
+
+# good
+module Foo
+  bar.using(Date)
+end
+```
+
 ## Sorbet/SignatureBuildOrder
 
 Enabled by default | Safe | Supports autocorrection | VersionAdded | VersionChanged
 --- | --- | --- | --- | ---
 Enabled | Yes | Yes  | 0.3.0 | -