diff --git a/Gemfile.lock b/Gemfile.lock
index c1f316b..e696ad2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -284,7 +284,7 @@ GEM
       ast (~> 2.2)
     pg (0.21.0)
     powerpack (0.1.1)
-    puma (3.9.1)
+    puma (3.12.4)
     rack (2.2.2)
     rack-test (0.6.3)
       rack (>= 1.0)