diff --git a/Gemfile.lock b/Gemfile.lock
index 48a87b7..4c3572d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -152,7 +152,7 @@ GEM
       activesupport (>= 4.2)
     popper_js (1.14.5)
     public_suffix (4.0.1)
-    puma (3.12.2)
+    puma (3.12.4)
     rack (2.0.8)
     rack-pjax (1.1.0)
       nokogiri (~> 1.5)