diff --git a/Gemfile.lock b/Gemfile.lock
index 8aa4c7c..625521d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,7 +27,7 @@ GEM
       mini_portile2 (~> 2.4.0)
     phantomjs (2.1.1.0)
     public_suffix (3.0.3)
-    puma (3.12.1)
+    puma (3.12.6)
     rack (2.0.7)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)