diff --git a/Gemfile.lock b/Gemfile.lock
index e8127a9..2993087 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -236,7 +236,7 @@ GEM
     pg (1.5.3)
     promise.rb (0.7.4)
     public_suffix (5.0.1)
-    puma (6.2.2)
+    puma (6.3.1)
       nio4r (~> 2.0)
     racc (1.6.2)
     rack (2.2.7)