diff --git a/Gemfile.lock b/Gemfile.lock
index 7b1e088..1472ba3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -221,7 +221,7 @@ GEM
     psych (5.1.2)
       stringio
     public_suffix (6.0.1)
-    puma (6.4.3)
+    puma (6.6.0)
       nio4r (~> 2.0)
     pwned (2.4.1)
     raabro (1.4.0)