diff --git a/Gemfile.lock b/Gemfile.lock
index 792b54ec..4df063e7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -352,7 +352,7 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rbs (2.8.4)
-    rdoc (6.6.2)
+    rdoc (6.6.3.1)
       psych (>= 4.0.0)
     redis (3.3.5)
     reek (6.1.4)