diff --git a/Gemfile.lock b/Gemfile.lock
index 809da3e..7acf25f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -112,7 +112,7 @@ GEM
     multi_test (0.1.2)
     mustermann (1.0.2)
     netrc (0.11.0)
-    nio4r (2.3.1)
+    nio4r (2.5.8)
     nokogiri (1.8.2)
       mini_portile2 (~> 2.3.0)
     pg (1.0.0)
@@ -129,7 +129,7 @@ GEM
       byebug (~> 10.0)
       pry (~> 0.10)
     public_suffix (3.0.2)
-    puma (4.3.1)
+    puma (5.6.4)
       nio4r (~> 2.0)
     rack (2.0.5)
     rack-protection (2.0.1)