diff --git a/apps/epp_proxy/priv/test_backend_app/Gemfile.lock b/apps/epp_proxy/priv/test_backend_app/Gemfile.lock
index 7c90236..60f7a6d 100644
--- a/apps/epp_proxy/priv/test_backend_app/Gemfile.lock
+++ b/apps/epp_proxy/priv/test_backend_app/Gemfile.lock
@@ -1,8 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    nio4r (2.4.0)
-    puma (4.0.0)
+    nio4r (2.5.2)
+    puma (4.3.1)
       nio4r (~> 2.0)
     rack (2.0.8)
     rack-unreloader (1.7.0)