diff --git a/Gemfile.lock b/Gemfile.lock
index ca97c05..d4182eb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -175,7 +175,7 @@ GEM
       net-ssh (>= 2.6.5, < 7.0.0)
     net-ssh (6.1.0)
     nifty-generators (0.4.6)
-    nio4r (2.5.4)
+    nio4r (2.5.8)
     nokogiri (1.8.5)
       mini_portile2 (~> 2.3.0)
     nokogumbo (1.5.0)
@@ -190,7 +190,7 @@ GEM
     pg (0.20.0)
     polyamorous (2.3.0)
       activerecord (>= 5.0)
-    puma (5.1.1)
+    puma (5.6.2)
       nio4r (~> 2.0)
     rack (2.2.3)
     rack-test (1.1.0)