diff --git a/.rubocop.yml b/.rubocop.yml
index a3d399546..03181bbf4 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -303,9 +303,6 @@ Lint/EmptyInterpolation:
 Lint/EmptyWhen:
   Enabled: true
 
-Lint/EndInMethod:
-  Enabled: true
-
 Lint/EnsureReturn:
   Enabled: true
 
diff --git a/Gemfile b/Gemfile
index 1e8b164b8..d2b86aeac 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,7 +11,7 @@ gem "pry", "0.12.2"
 gem "rake", "~> 13.0"
 gem "rake-compiler", "~> 1.0"
 gem "rexml", "~> 3.2" # TODO: remove when https://github.com/gettalong/kramdown/pull/638 released
-gem "rubocop", "0.80.1"
+gem "rubocop", "0.81.0"
 gem "rubocop-performance", "~> 1.3"
 gem "simplecov", "0.17.1"
 gem "yard", "0.9.24"
diff --git a/Gemfile.lock b/Gemfile.lock
index e762bb258..c6b34abef 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -37,7 +37,7 @@ GEM
       faraday (>= 0.9)
       sawyer (~> 0.8.0, >= 0.5.3)
     parallel (1.19.1)
-    parser (2.7.0.4)
+    parser (2.7.0.5)
       ast (~> 2.4.0)
     pry (0.12.2)
       coderay (~> 1.1.0)
@@ -48,14 +48,14 @@ GEM
     rake-compiler (1.1.0)
       rake
     rexml (3.2.4)
-    rubocop (0.80.1)
+    rubocop (0.81.0)
       jaro_winkler (~> 1.5.1)
       parallel (~> 1.10)
       parser (>= 2.7.0.1)
       rainbow (>= 2.2.2, < 4.0)
       rexml
       ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 1.4.0, < 1.7)
+      unicode-display_width (>= 1.4.0, < 2.0)
     rubocop-performance (1.5.2)
       rubocop (>= 0.71.0)
     ruby-progressbar (1.10.1)
@@ -68,7 +68,7 @@ GEM
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)
     tomlrb (1.2.9)
-    unicode-display_width (1.6.1)
+    unicode-display_width (1.7.0)
     yard (0.9.24)
 
 PLATFORMS
@@ -84,7 +84,7 @@ DEPENDENCIES
   rake (~> 13.0)
   rake-compiler (~> 1.0)
   rexml (~> 3.2)
-  rubocop (= 0.80.1)
+  rubocop (= 0.81.0)
   rubocop-performance (~> 1.3)
   simplecov (= 0.17.1)
   yard (= 0.9.24)