diff --git a/Gemfile.lock b/Gemfile.lock
index 0220968..0b9cd80 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -72,10 +72,10 @@ GEM
     multipart-post (2.1.1)
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     pg (1.2.3)
     public_suffix (4.0.5)
-    puma (4.3.5)
+    puma (4.3.11)
       nio4r (~> 2.0)
     rack (2.2.3)
     rack-protection (2.0.8.1)