diff --git a/Gemfile.lock b/Gemfile.lock
index 8ce8d88..ee3b0e5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -162,7 +162,7 @@ GEM
       activerecord (>= 3.0, < 5.2)
       activesupport (>= 3.0, < 5.2)
       i18n
-    rdoc (6.2.1)
+    rdoc (6.3.2)
     responders (2.4.1)
       actionpack (>= 4.2.0, < 6.0)
       railties (>= 4.2.0, < 6.0)