diff --git a/Gemfile.lock b/Gemfile.lock
index 45c38da..d715ff0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -208,7 +208,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (3.0.2)
-    puma (3.11.4)
+    puma (3.12.0)
     rack (2.0.5)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)