diff --git a/morea/time-series-analysis/module-time-series-analysis.md b/morea/time-series-analysis/module-time-series-analysis.md
index e751aa1d..4fa55c56 100644
--- a/morea/time-series-analysis/module-time-series-analysis.md
+++ b/morea/time-series-analysis/module-time-series-analysis.md
@@ -7,6 +7,7 @@ morea_outcomes:
   - 10-tsa-outcomes
 morea_readings:
   - 20-tsa-readings
+  - 21-tsa-overview
 morea_experiences:
   - 31-tsa-experience-icebreaker
   - 32-tsa-experience-lab & mini lecture 1