diff --git a/Gemfile.lock b/Gemfile.lock
index 2e669167..a380c7da 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -145,7 +145,7 @@ GEM
     pg (1.5.6)
     psych (5.1.2)
       stringio
-    puma (6.4.2)
+    puma (6.4.3)
       nio4r (~> 2.0)
     racc (1.7.3)
     rack (3.0.11)