diff --git a/Gemfile.lock b/Gemfile.lock
index 58a308e..5eba867 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -100,7 +100,7 @@ GEM
     parallel (1.21.0)
     parser (3.0.3.2)
       ast (~> 2.4.1)
-    puma (4.3.10)
+    puma (4.3.12)
       nio4r (~> 2.0)
     racc (1.6.0)
     rack (2.2.3)