diff --git a/Gemfile.lock b/Gemfile.lock
index 22b9241..cd15965 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -63,7 +63,7 @@ GEM
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    puma (3.12.0)
+    puma (3.12.3)
     rack (2.0.5)
     rack-protection (2.0.3)
       rack