diff --git a/Gemfile.lock b/Gemfile.lock
index f3650b8..fafa655 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -193,7 +193,7 @@ GEM
     multi_json (1.13.1)
     multi_test (0.1.2)
     nenv (0.3.0)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
     notiffany (0.1.1)
@@ -222,7 +222,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (3.0.2)
-    puma (4.2.1)
+    puma (4.3.9)
       nio4r (~> 2.0)
     rack (1.6.11)
     rack-cors (1.0.2)