diff --git a/Gemfile.lock b/Gemfile.lock
index 1bdcedc..850b041 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -155,7 +155,7 @@ GEM
       mini_portile2 (~> 2.4.0)
     pg (1.2.2)
     public_suffix (4.0.3)
-    puma (4.3.3)
+    puma (4.3.5)
       nio4r (~> 2.0)
     rack (2.2.2)
     rack-proxy (0.6.5)