diff --git a/build-constraints.yaml b/build-constraints.yaml
index 6186d0fd..34aa8ccd 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -793,7 +793,7 @@ packages:
         - gravatar
         - load-env
         # - yesod-auth-oauth2 # needs to allow aeson-1.4
-        # - yesod-markdown # http-types 0.12 via pandoc
+        - yesod-markdown
         - yesod-paginator
 
     "Felipe Lessa <felipe.lessa@gmail.com> @meteficha":