diff --git a/Gemfile.lock b/Gemfile.lock
index 65c6ef5e..4fb82f1a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -160,7 +160,7 @@ GEM
       coderay (~> 1.0)
       method_source (~> 0.8)
       slop (~> 3.4)
-    puma (3.11.4)
+    puma (3.12.2)
     quiet_assets (1.0.2)
       railties (>= 3.1, < 5.0)
     rack (1.4.7)