diff --git a/Gemfile.lock b/Gemfile.lock
index fecb711..87aafa6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -106,7 +106,7 @@ GEM
     nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
     public_suffix (3.0.2)
-    puma (3.12.2)
+    puma (3.12.4)
     rack (2.0.8)
     rack-test (1.0.0)
       rack (>= 1.0, < 3)