diff --git a/Gemfile.lock b/Gemfile.lock
index ba93994..ab2b76b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -204,7 +204,7 @@ GEM
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    puma (3.12.2)
+    puma (3.12.4)
     rack (2.1.2)
     rack-test (0.6.3)
       rack (>= 1.0)