diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 555e8eae..33a0f32f 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -91,7 +91,7 @@ GEM
     parallel (1.19.2)
     public_suffix (4.0.6)
     racc (1.6.2)
-    rack (2.2.6.4)
+    rack (2.2.20)
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)