diff --git a/Gemfile.lock b/Gemfile.lock
index dd28a916442..9dded399220 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -262,7 +262,7 @@ GEM
     pry-rails (0.3.9)
       pry (>= 0.10.4)
     public_suffix (4.0.5)
-    puma (4.3.3)
+    puma (4.3.4)
       nio4r (~> 2.0)
     r2 (0.2.7)
     rack (2.2.2)