diff --git a/Gemfile.lock b/Gemfile.lock
index 89b58b2..92de9fa 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -162,7 +162,7 @@ GEM
     pry-rails (0.3.6)
       pry (>= 0.10.4)
     public_suffix (2.0.5)
-    puma (3.9.1)
+    puma (3.11.4)
     pusher (1.3.1)
       httpclient (~> 2.7)
       multi_json (~> 1.0)