diff --git a/Gemfile.lock b/Gemfile.lock
index 571dae7..8f2ada5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -172,7 +172,7 @@ GEM
     pry-stack_explorer (0.4.9.3)
       binding_of_caller (>= 0.7)
       pry (>= 0.9.11)
-    puma (3.12.1)
+    puma (3.12.3)
     puma_worker_killer (0.1.0)
       get_process_mem (~> 0.2)
       puma (>= 2.7, < 4)