diff --git a/Gemfile.lock b/Gemfile.lock
index a3df0fd..8e63d85 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -67,7 +67,7 @@ GEM
       docile (~> 1.1)
       simplecov-html (~> 0.11)
       simplecov_json_formatter (~> 0.1)
-    simplecov-html (0.12.3)
+    simplecov-html (0.13.1)
     simplecov_json_formatter (0.1.4)
     unicode-display_width (2.5.0)
     yard (0.9.37)