diff --git a/Gemfile.lock b/Gemfile.lock
index 9e872a3..4dc4a75 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -143,7 +143,7 @@ GEM
     parser (3.0.2.0)
       ast (~> 2.4.1)
     pg (1.2.3)
-    puma (5.4.0)
+    puma (5.6.4)
       nio4r (~> 2.0)
     pundit (2.1.1)
       activesupport (>= 3.0.0)