diff --git a/build-constraints.yaml b/build-constraints.yaml
index 68550c58..e59f6b88 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -651,10 +651,13 @@ packages:
         - uri-encode
 
     "Simon Michael <simon@joyful.com>":
+        - regex-compat-tdfa
+        - darcs
         - hledger
         - hledger-ui
         - hledger-web
         # - shelltestrunner
+        
 
     "Mihai Maruseac <mihai.maruseac@gmail.com>":
         - io-manager