diff --git a/Gemfile.lock b/Gemfile.lock
index 518734b..24f1107 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -192,7 +192,7 @@ GEM
     mini_portile2 (2.4.0)
     minitest (5.14.1)
     nenv (0.3.0)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
     notiffany (0.1.3)
@@ -206,7 +206,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (4.0.2)
-    puma (4.3.5)
+    puma (4.3.9)
       nio4r (~> 2.0)
     rack (2.2.3)
     rack-test (1.1.0)