diff --git a/Gemfile.lock b/Gemfile.lock
index 7dfe650..d8d19a8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -97,7 +97,7 @@ GEM
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
     public_suffix (3.0.2)
-    puma (3.9.1)
+    puma (3.12.6)
     rack (2.2.2)
     rack-protection (2.0.7)
       rack