diff --git a/Gemfile.lock b/Gemfile.lock
index 9044764..a01fa8f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,38 +1,41 @@
 PATH
   remote: .
   specs:
-    fluent-plugin-bunyan (0.0.4)
+    fluent-plugin-bunyan (0.0.5)
       fluentd (>= 0.14.10, < 2)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    concurrent-ruby (1.1.6)
-    cool.io (1.6.0)
-    fluentd (1.9.3)
+    concurrent-ruby (1.1.10)
+    cool.io (1.7.1)
+    fluentd (1.14.6)
+      bundler
       cool.io (>= 1.4.5, < 2.0.0)
-      http_parser.rb (>= 0.5.1, < 0.7.0)
+      http_parser.rb (>= 0.5.1, < 0.9.0)
       msgpack (>= 1.3.1, < 2.0.0)
-      serverengine (>= 2.0.4, < 3.0.0)
+      serverengine (>= 2.2.5, < 3.0.0)
       sigdump (~> 0.2.2)
-      strptime (>= 0.2.2, < 1.0.0)
+      strptime (>= 0.2.4, < 1.0.0)
       tzinfo (>= 1.0, < 3.0)
       tzinfo-data (~> 1.0)
+      webrick (>= 1.4.2, < 1.8.0)
       yajl-ruby (~> 1.0)
-    http_parser.rb (0.6.0)
-    msgpack (1.3.3)
+    http_parser.rb (0.8.0)
+    msgpack (1.5.1)
     power_assert (0.2.7)
-    serverengine (2.2.1)
+    serverengine (2.2.5)
       sigdump (~> 0.2.2)
     sigdump (0.2.4)
-    strptime (0.2.3)
+    strptime (0.2.5)
     test-unit (3.2.5)
       power_assert
-    tzinfo (2.0.1)
+    tzinfo (2.0.4)
       concurrent-ruby (~> 1.0)
-    tzinfo-data (1.2019.3)
+    tzinfo-data (1.2022.1)
       tzinfo (>= 1.0.0)
-    yajl-ruby (1.4.1)
+    webrick (1.7.0)
+    yajl-ruby (1.4.3)
 
 PLATFORMS
   ruby