diff --git a/Gemfile.lock b/Gemfile.lock
index e7035e4..8e8f466 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -168,7 +168,7 @@ GEM
       nokogiri (~> 1.8, >= 1.8.4)
     pg (1.2.2)
     public_suffix (4.0.3)
-    puma (4.3.1)
+    puma (4.3.5)
       nio4r (~> 2.0)
     rack (2.1.2)
     rack-cors (1.1.1)