diff --git a/Gemfile.lock b/Gemfile.lock
index d8f8800..bf8f9bd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -120,7 +120,7 @@ GEM
       mini_portile2 (~> 2.4.0)
     pg (1.1.4)
     public_suffix (3.0.3)
-    puma (3.12.0)
+    puma (3.12.3)
     rack (2.0.6)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)