diff --git a/Gemfile.lock b/Gemfile.lock
index c971f67..da7fb6f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -84,7 +84,7 @@ GEM
     nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
     pg (1.1.4)
-    puma (3.12.3)
+    puma (3.12.4)
     rack (2.2.2)
     rack-cors (1.0.5)
       rack (>= 1.6.0)