diff --git a/Gemfile.lock b/Gemfile.lock
index 24d6317..d40ed85 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -10,11 +10,11 @@ GEM
     multi_json (1.14.1)
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
     public_suffix (4.0.3)
-    puma (4.3.3)
+    puma (4.3.9)
       nio4r (~> 2.0)
     pygments.rb (1.2.1)
       multi_json (>= 1.0.0)