diff --git a/Gemfile.lock b/Gemfile.lock
index e450ee9..bb800b5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,7 +27,7 @@ GEM
     multi_json (1.14.1)
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.7)
       mini_portile2 (~> 2.4.0)
     pg (1.2.2)
@@ -36,7 +36,7 @@ GEM
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    puma (4.3.1)
+    puma (4.3.11)
       nio4r (~> 2.0)
     rack (2.1.1)
     rack-protection (2.0.8.1)