diff --git a/Gemfile.lock b/Gemfile.lock
index 874c693..43b4f20 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -69,7 +69,7 @@ GEM
     nio4r (2.5.2)
     nokogiri (1.10.7)
       mini_portile2 (~> 2.4.0)
-    puma (3.12.2)
+    puma (3.12.4)
     rack (2.0.8)
     rack-test (0.6.3)
       rack (>= 1.0)