diff --git a/Gemfile.lock b/Gemfile.lock
index a04c1ff..3bf7101 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -227,7 +227,7 @@ GEM
     pry-rails (0.3.6)
       pry (>= 0.10.4)
     public_suffix (3.0.1)
-    puma (3.11.2)
+    puma (3.12.4)
     rack (2.0.7)
     rack-cors (1.0.2)
     rack-mini-profiler (0.10.7)