diff --git a/Gemfile.lock b/Gemfile.lock
index a89f469..da751f9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -105,7 +105,7 @@ GEM
       excon
       faraday (>= 0.9)
     public_suffix (4.0.3)
-    puma (4.3.1)
+    puma (4.3.5)
       nio4r (~> 2.0)
     rack (2.0.8)
     rack-contrib (2.1.0)