diff --git a/Gemfile.lock b/Gemfile.lock
index da98a6f..a0e64fd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -118,7 +118,7 @@ GEM
     orm_adapter (0.5.0)
     pg (0.19.0)
     public_suffix (2.0.5)
-    puma (3.6.2)
+    puma (3.12.4)
     rack (1.6.8)
     rack-protection (1.5.3)
       rack