diff --git a/Gemfile.lock b/Gemfile.lock
index 5b75ace..669b9b9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,8 +7,8 @@ GEM
     json (2.6.2)
     mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
-    nio4r (2.5.9)
-    puma (6.3.1)
+    nio4r (2.7.3)
+    puma (6.4.2)
       nio4r (~> 2.0)
     rack (2.2.6.4)
     rack-protection (3.0.4)