diff --git a/functions/slack/Gemfile.lock b/functions/slack/Gemfile.lock
index 1ef95bce8..d792c7da8 100644
--- a/functions/slack/Gemfile.lock
+++ b/functions/slack/Gemfile.lock
@@ -49,7 +49,7 @@ GEM
     public_suffix (5.0.3)
     puma (6.4.2)
       nio4r (~> 2.0)
-    rack (3.0.9.1)
+    rack (3.1.20)
     representable (3.2.0)
       declarative (< 0.1.0)
       trailblazer-option (>= 0.1.1, < 0.2.0)