diff --git a/Gemfile.lock b/Gemfile.lock
index 2b74ca3..4e024f7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -182,7 +182,7 @@ GEM
     psych (5.1.0)
       stringio
     public_suffix (5.0.1)
-    puma (6.3.0)
+    puma (6.3.1)
       nio4r (~> 2.0)
     racc (1.7.1)
     rack (2.2.7)