diff --git a/Gemfile.lock b/Gemfile.lock
index 1a42adb3..eb4bf61e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -250,7 +250,7 @@ GEM
       zeitwerk (~> 2.6)
     rainbow (3.1.1)
     rake (13.2.1)
-    rdoc (6.7.0)
+    rdoc (6.8.1)
       psych (>= 4.0.0)
     regexp_parser (2.9.2)
     reline (0.5.11)