diff --git a/Gemfile.lock b/Gemfile.lock
index d59c8d5..48195e2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -29,7 +29,7 @@ GEM
       concurrent-ruby (~> 1.0)
     http_parser.rb (0.6.0)
     json_schema (0.20.4)
-    kramdown (2.3.0)
+    kramdown (2.3.1)
       rexml
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)