diff --git a/Gemfile.lock b/Gemfile.lock
index 6d559923..e0abdfb0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -359,7 +359,7 @@ GEM
       slop (~> 3.4)
     public_suffix (3.0.3)
     puma (3.12.0)
-    rack (2.0.5)
+    rack (2.0.6)
     rack-openid (1.3.1)
       rack (>= 1.1.0)
       ruby-openid (>= 2.1.8)