diff --git a/build-constraints.yaml b/build-constraints.yaml
index 5415dfee..19b99094 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1882,6 +1882,7 @@ packages:
         - read-env-var
         - xml-html-qq
         - yahoo-finance-api
+        - yesod-markdown
 
     "Franklin Chen <franklinchen@franklinchen.com> @FranklinChen":
         - Ebnf2ps