diff --git a/CHANGELOG.md b/CHANGELOG.md
index f3e67734b0b..1ff8ecff2cc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,7 @@
 ### Changes
 
 * [#8294](https://github.com/rubocop-hq/rubocop/pull/8294): Sort `AllowedNames` of `MethodParameterName` cop. ([@AlexWayfer][])
+* [#8294](https://github.com/rubocop-hq/rubocop/pull/8294): Add `of` to `AllowedNames` of `MethodParameterName` cop. ([@AlexWayfer][])
 
 ## 0.87.1 (2020-07-07)
 
diff --git a/config/default.yml b/config/default.yml
index a09912d31a4..f3a87958b8d 100644
--- a/config/default.yml
+++ b/config/default.yml
@@ -2191,6 +2191,7 @@ Naming/MethodParameterName:
     - in
     - io
     - ip
+    - of
     - 'on'
     - os
     - pp
diff --git a/docs/modules/ROOT/pages/cops_naming.adoc b/docs/modules/ROOT/pages/cops_naming.adoc
index ed909e4cdf1..57cfeeea848 100644
--- a/docs/modules/ROOT/pages/cops_naming.adoc
+++ b/docs/modules/ROOT/pages/cops_naming.adoc
@@ -750,7 +750,7 @@ end
 | Boolean
 
 | AllowedNames
-| `at`, `by`, `db`, `id`, `in`, `io`, `ip`, `on`, `os`, `pp`, `to`
+| `at`, `by`, `db`, `id`, `in`, `io`, `ip`, `of`, `on`, `os`, `pp`, `to`
 | Array
 
 | ForbiddenNames