diff --git a/spec/jsonapi_app/Gemfile.lock b/spec/jsonapi_app/Gemfile.lock
index c05f9f8..cef869d 100644
--- a/spec/jsonapi_app/Gemfile.lock
+++ b/spec/jsonapi_app/Gemfile.lock
@@ -70,7 +70,7 @@ GEM
     nokogiri (1.10.5)
       mini_portile2 (~> 2.4.0)
     pg (0.21.0)
-    puma (3.12.2)
+    puma (3.12.4)
     rack (2.0.7)
     rack-test (0.6.3)
       rack (>= 1.0)