diff --git a/Gemfile.lock b/Gemfile.lock
index 4374563..d0e52c8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -153,7 +153,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (4.0.3)
-    puma (3.12.1)
+    puma (3.12.4)
     rack (2.2.2)
     rack-proxy (0.6.5)
       rack