diff --git a/Gemfile.lock b/Gemfile.lock
index 859b51a..21ce985 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -76,7 +76,7 @@ GEM
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
     multi_json (1.13.1)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
     paho-mqtt (1.0.12)
@@ -92,7 +92,7 @@ GEM
       method_source (~> 0.9.0)
     psych (3.1.0)
     public_suffix (3.0.3)
-    puma (4.3.5)
+    puma (4.3.9)
       nio4r (~> 2.0)
     r18n-core (3.2.0)
     rack (2.2.3)