diff --git a/Gemfile.lock b/Gemfile.lock
index 34c0e0d..4d05cc2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -42,11 +42,11 @@ GEM
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.3.6)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (4.0.4)
-    puma (4.3.3)
+    puma (4.3.12)
       nio4r (~> 2.0)
     rack (1.6.13)
     rack-jekyll (0.5.0)