diff --git a/Gemfile.lock b/Gemfile.lock
index 8393aa6e..f7bfa226 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -419,7 +419,7 @@ GEM
       connection_pool (>= 2.3.0)
       rack (>= 2.2.4)
       redis-client (>= 0.14.0)
-    sitemap_generator (6.1.2)
+    sitemap_generator (6.3.0)
       builder (~> 3.0)
     smart_properties (1.17.0)
     sprockets (4.0.2)