diff --git a/Gemfile.lock b/Gemfile.lock
index 68c61f9d..81a6be64 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -378,7 +378,7 @@ GEM
       method_source (~> 0.8.1)
       slop (~> 3.4)
     public_suffix (3.1.1)
-    puma (3.12.2)
+    puma (3.12.4)
     rack (2.0.8)
     rack-openid (1.3.1)
       rack (>= 1.1.0)