diff --git a/Gemfile.lock b/Gemfile.lock
index 04bc29b69..b974590e3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -360,7 +360,7 @@ GEM
       ffi (~> 1.0)
     rbs (3.6.1)
       logger
-    rdoc (6.7.0)
+    rdoc (6.8.0)
       psych (>= 4.0.0)
     redis (5.3.0)
       redis-client (>= 0.22.0)