diff --git a/Gemfile.lock b/Gemfile.lock
index 9b6f7b1..1596cd6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,9 +7,9 @@ GEM
       websocket-driver (>= 0.5.1)
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     pg (1.2.2)
-    puma (4.3.5)
+    puma (4.3.11)
       nio4r (~> 2.0)
     rack (2.2.3)
     rack-protection (2.0.8.1)