diff --git a/Gemfile.lock b/Gemfile.lock
index e150970..6e71de0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -41,14 +41,14 @@ GEM
     mysql2 (0.3.21)
     net-http-persistent (2.9.4)
     net-http-pipeline (1.0.1)
-    nio4r (2.4.0)
+    nio4r (2.5.8)
     parallel (1.17.0)
     parser (2.6.3.0)
       ast (~> 2.4.0)
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    puma (4.0.1)
+    puma (4.3.12)
       nio4r (~> 2.0)
     pusher-client (0.6.2)
       json