diff --git a/Gemfile.lock b/Gemfile.lock
index a0728f0..3ff807f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -730,7 +730,7 @@ GEM
       ast (~> 2.4.0)
     pg (0.20.0)
     powerpack (0.1.2)
-    puma (3.12.0)
+    puma (3.12.4)
     rack (2.0.5)
     rack-attack (5.4.2)
       rack (>= 1.0, < 3)