diff --git a/Gemfile.lock b/Gemfile.lock
index aa1608c18c..34f41c4fe4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -288,7 +288,7 @@ GEM
       method_source (~> 0.8.1)
       slop (~> 3.4)
     public_suffix (3.0.2)
-    puma (3.8.2)
+    puma (3.12.1)
     que (0.10.0)
     que-web (0.4.0)
       erubis