diff --git a/Gemfile.lock b/Gemfile.lock
index 7b6e190..f1f465a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -44,7 +44,7 @@ GEM
     nio4r (2.7.3)
     power_assert (2.0.3)
     public_suffix (6.0.1)
-    puma (6.4.2)
+    puma (6.4.3)
       nio4r (~> 2.0)
     rack (3.1.7)
     rack-protection (4.0.0)