diff --git a/Gemfile.lock b/Gemfile.lock
index 86e609c..dad5000 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,7 +27,7 @@ GEM
     multipart-post (2.1.0)
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
-    nio4r (2.5.5)
+    nio4r (2.5.8)
     parallel (1.19.2)
     parser (2.7.2.0)
       ast (~> 2.4.1)
@@ -37,7 +37,7 @@ GEM
     pry-byebug (3.7.0)
       byebug (~> 11.0)
       pry (~> 0.10)
-    puma (5.2.2)
+    puma (6.1.0)
       nio4r (~> 2.0)
     rack (2.1.4)
     rack-protection (2.0.8.1)