diff --git a/Gemfile.lock b/Gemfile.lock
index 7e6fbc9..56a61d4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -51,7 +51,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (3.0.3)
-    puma (3.12.1)
+    puma (3.12.3)
     rack (1.6.11)
     rack-protection (1.5.5)
       rack