diff --git a/Gemfile.lock b/Gemfile.lock
index e572ecc..e63c99e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -43,10 +43,10 @@ GEM
     multipart-post (2.1.1)
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     pg (1.2.2)
     power_assert (1.2.0)
-    puma (4.3.3)
+    puma (4.3.9)
       nio4r (~> 2.0)
     rack (2.2.2)
     rack-protection (2.0.8.1)