diff --git a/fluentd/Gemfile.lock b/fluentd/Gemfile.lock
index e6b5658..1bbdf70 100644
--- a/fluentd/Gemfile.lock
+++ b/fluentd/Gemfile.lock
@@ -121,7 +121,7 @@ GEM
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.7)
-    yajl-ruby (1.4.1)
+    yajl-ruby (1.4.3)
 
 PLATFORMS
   ruby