diff --git a/CHANGELOG b/CHANGELOG
index f1e18c6e38b1299355bda6a629249dfcfb1941e8..3da5583d452eb4eec6be3937422f494a4e087ed7 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -32,6 +32,7 @@ v 8.10.0 (unreleased)
   - Better caching of git calls on ProjectsController#show.
   - Add API endpoint for a group issues !4520 (mahcsig)
   - Add Bugzilla integration !4930 (iamtjg)
+  - Instrument Rinku usage
   - Metrics for Rouge::Plugins::Redcarpet and Rouge::Formatters::HTMLGitlab
   - RailsCache metris now includes fetch_hit/fetch_miss and read_hit/read_miss info.
   - Allow [ci skip] to be in any case and allow [skip ci]. !4785 (simon_w)
diff --git a/config/initializers/metrics.rb b/config/initializers/metrics.rb
index 44601f2b2bde5a428daac152a6ae2f0f23101288..c4266ab8ba5fe017810d120df62511396fdec6f5 100644
--- a/config/initializers/metrics.rb
+++ b/config/initializers/metrics.rb
@@ -135,6 +135,8 @@ if Gitlab::Metrics.enabled?
 
     config.instrument_instance_methods(Rouge::Plugins::Redcarpet)
     config.instrument_instance_methods(Rouge::Formatters::HTMLGitlab)
+
+    config.instrument_methods(Rinku)
   end
 
   GC::Profiler.enable