diff --git a/Gemfile.lock b/Gemfile.lock
index b129728..6dc88f0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,51 +1,52 @@
 PATH
   remote: .
   specs:
-    fluent-plugin-imds (0.1.0)
+    fluent-plugin-imds (0.1.5)
       fluentd (>= 0.14.10, < 2)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.7.0)
+    addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
-    concurrent-ruby (1.1.6)
-    cool.io (1.6.0)
+    concurrent-ruby (1.1.9)
+    cool.io (1.7.1)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
-    dig_rb (1.0.1)
-    fluentd (1.8.1)
+    fluentd (1.13.2)
+      bundler
       cool.io (>= 1.4.5, < 2.0.0)
-      dig_rb (~> 1.0.0)
-      http_parser.rb (>= 0.5.1, < 0.7.0)
-      msgpack (>= 1.2.0, < 2.0.0)
-      serverengine (>= 2.0.4, < 3.0.0)
+      http_parser.rb (>= 0.5.1, < 0.8.0)
+      msgpack (>= 1.3.1, < 2.0.0)
+      serverengine (>= 2.2.2, < 3.0.0)
       sigdump (~> 0.2.2)
       strptime (>= 0.2.2, < 1.0.0)
       tzinfo (>= 1.0, < 3.0)
       tzinfo-data (~> 1.0)
+      webrick (>= 1.4.2, < 1.8.0)
       yajl-ruby (~> 1.0)
     hashdiff (1.0.1)
-    http_parser.rb (0.6.0)
-    msgpack (1.3.3)
+    http_parser.rb (0.7.0)
+    msgpack (1.4.2)
     power_assert (1.1.7)
-    public_suffix (4.0.4)
+    public_suffix (4.0.6)
     rake (12.3.3)
     safe_yaml (1.0.5)
-    serverengine (2.2.1)
+    serverengine (2.2.4)
       sigdump (~> 0.2.2)
     sigdump (0.2.4)
-    strptime (0.2.3)
+    strptime (0.2.5)
     test-unit (3.3.5)
       power_assert
-    tzinfo (2.0.2)
+    tzinfo (2.0.4)
       concurrent-ruby (~> 1.0)
-    tzinfo-data (1.2019.3)
+    tzinfo-data (1.2021.1)
       tzinfo (>= 1.0.0)
     webmock (3.8.3)
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)
+    webrick (1.7.0)
     yajl-ruby (1.4.1)
 
 PLATFORMS