diff --git a/Gemfile.lock b/Gemfile.lock
index 0475642..9396e1f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -23,13 +23,13 @@ GEM
     mustermann (1.0.2)
     mysql2 (0.5.2)
     netrc (0.11.0)
-    nio4r (2.5.8)
+    nio4r (2.7.0)
     nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
     nokogumbo (2.0.1)
       nokogiri (~> 1.8, >= 1.8.4)
     open4 (1.3.4)
-    puma (4.3.12)
+    puma (5.6.8)
       nio4r (~> 2.0)
     rack (2.0.6)
     rack-protection (2.0.3)