diff --git a/Gemfile.lock b/Gemfile.lock
index 54bbe7f0aa..118cfb3bf5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -590,7 +590,7 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
-    sitemap_generator (6.2.1)
+    sitemap_generator (6.3.0)
       builder (~> 3.0)
     smart_properties (1.15.0)
     snaky_hash (2.0.1)