diff --git a/Gemfile.lock b/Gemfile.lock
index 4237e23..e67f416 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -71,7 +71,7 @@ GEM
     nokogiri (1.6.7.2)
       mini_portile2 (~> 2.0.0.rc2)
     pg (0.18.4)
-    puma (3.2.0)
+    puma (3.12.6)
     rack (2.0.0.alpha)
       json
     rack-test (0.6.3)