diff --git a/Gemfile.lock b/Gemfile.lock
index a3a4962..d036652 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -125,7 +125,7 @@ GEM
       ruby2_keywords (~> 0.0.1)
     mustermann-grape (1.0.2)
       mustermann (>= 1.0.0)
-    nio4r (2.5.8)
+    nio4r (2.5.9)
     nokogiri (1.14.3)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
@@ -139,7 +139,7 @@ GEM
       cliver (~> 0.3.1)
       websocket-driver (>= 0.2.0)
     public_suffix (4.0.7)
-    puma (5.6.4)
+    puma (6.4.0)
       nio4r (~> 2.0)
     racc (1.6.2)
     rack (2.2.7)