diff --git a/Gemfile.lock b/Gemfile.lock
index b3c696d..6a4dfa9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -114,7 +114,7 @@ GEM
     mustermann (1.0.3)
     nenv (0.3.0)
     netrc (0.11.0)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     notiffany (0.1.1)
       nenv (~> 0.1)
       shellany (~> 0.0)
@@ -122,7 +122,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (3.0.3)
-    puma (4.3.3)
+    puma (4.3.9)
       nio4r (~> 2.0)
     rack (2.2.2)
     rack-protection (2.0.4)