diff --git a/Gemfile.lock b/Gemfile.lock
index dadf140..50fe6c4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -78,7 +78,7 @@ GEM
     mini_portile2 (2.2.0)
     minitest (5.10.3)
     multi_json (1.12.1)
-    nio4r (2.1.0)
+    nio4r (2.5.8)
     nokogiri (1.8.0)
       mini_portile2 (~> 2.2.0)
     pry (0.10.4)
@@ -90,7 +90,7 @@ GEM
       pry (~> 0.10)
     pry-rails (0.3.4)
       pry (>= 0.9.10)
-    puma (4.3.1)
+    puma (4.3.12)
       nio4r (~> 2.0)
     rack (2.0.3)
     rack-test (0.6.3)