diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 9e0e6f5..05a4596 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -99,7 +99,7 @@ GEM
     jekyll-watch (2.2.1)
       listen (~> 3.0)
     json (2.3.0)
-    kramdown (2.3.0)
+    kramdown (2.3.1)
       rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)