diff --git a/Gemfile.lock b/Gemfile.lock
index 50fd994..3e4f21e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -60,7 +60,7 @@ GEM
     multipart-post (2.1.1)
     mustermann (1.0.3)
     nenv (0.3.0)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     notiffany (0.1.3)
       nenv (~> 0.1)
       shellany (~> 0.0)
@@ -74,7 +74,7 @@ GEM
       byebug (~> 11.0)
       pry (~> 0.10)
     public_suffix (3.1.1)
-    puma (4.3.1)
+    puma (4.3.12)
       nio4r (~> 2.0)
     rack (2.0.8)
     rack-protection (2.0.5)