diff --git a/Gemfile.lock b/Gemfile.lock
index 6700ffbd..d9fb1bb1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -302,7 +302,7 @@ GEM
       binding_of_caller (>= 0.7)
       pry (>= 0.9.11)
     public_suffix (4.0.1)
-    puma (4.3.1)
+    puma (4.3.3)
       nio4r (~> 2.0)
     rack (1.6.12)
     rack-contrib (1.8.0)