diff --git a/Gemfile.lock b/Gemfile.lock
index 8458c28..6e2c5be 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -57,13 +57,13 @@ GEM
     minitest (5.19.0)
     mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
-    nio4r (2.5.9)
+    nio4r (2.7.0)
     parallel (1.23.0)
     parser (3.2.2.3)
       ast (~> 2.4.1)
       racc
     public_suffix (5.0.3)
-    puma (6.3.1)
+    puma (6.4.2)
       nio4r (~> 2.0)
     racc (1.7.1)
     rack (2.2.8.1)