diff --git a/Gemfile.lock b/Gemfile.lock
index 56df9ba..113d822 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -278,7 +278,7 @@ GEM
       zeitwerk (~> 2.6)
     rake (13.2.1)
     rb_sys (0.9.103)
-    rdoc (6.7.0)
+    rdoc (6.8.1)
       psych (>= 4.0.0)
     reline (0.5.11)
       io-console (~> 0.5)