diff --git a/nndiscourse/Gemfile.lock b/nndiscourse/Gemfile.lock
index 01c81ed..be4c0dc 100644
--- a/nndiscourse/Gemfile.lock
+++ b/nndiscourse/Gemfile.lock
@@ -48,7 +48,7 @@ GEM
     parallel (1.19.1)
     parser (2.7.0.2)
       ast (~> 2.4.0)
-    rack (2.2.3)
+    rack (2.2.6.4)
     rainbow (3.0.0)
     rake (13.0.1)
     rest-client (1.8.0)