diff --git a/Gemfile.lock b/Gemfile.lock
index 75e3ab5..ee984a7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -113,17 +113,17 @@ GEM
     rmagick (4.3.0)
     rss (0.2.9)
       rexml
-    rubocop (1.36.0)
+    rubocop (1.39.0)
       json (~> 2.3)
       parallel (~> 1.10)
       parser (>= 3.1.2.1)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
       rexml (>= 3.2.5, < 4.0)
-      rubocop-ast (>= 1.20.1, < 2.0)
+      rubocop-ast (>= 1.23.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 3.0)
-    rubocop-ast (1.21.0)
+    rubocop-ast (1.23.0)
       parser (>= 3.1.1.0)
     rubocop-checkstyle_formatter (0.6.0)
       rubocop (>= 1.14.0)