diff --git a/Gemfile.lock b/Gemfile.lock
index b487bdc..45ebd30 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -103,7 +103,7 @@ GEM
     nokogiri (1.10.5)
       mini_portile2 (~> 2.4.0)
     public_suffix (4.0.1)
-    puma (3.12.2)
+    puma (3.12.4)
     rack (2.0.8)
     rack-proxy (0.6.5)
       rack