diff --git a/Gemfile.lock b/Gemfile.lock
index dd53a31..46af87d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -115,7 +115,7 @@ GEM
     minitest (5.11.3)
     multi_json (1.13.1)
     netrc (0.11.0)
-    nio4r (2.5.1)
+    nio4r (2.5.2)
     nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
     parallel (1.17.0)
@@ -125,7 +125,7 @@ GEM
       eventmachine (= 1.0.9)
       ffi
     public_suffix (3.1.1)
-    puma (4.1.1)
+    puma (4.2.1)
       nio4r (~> 2.0)
     rack (2.0.7)
     rack-test (1.1.0)