diff --git a/build-constraints.yaml b/build-constraints.yaml
index 095a0b44..b23291be 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -11,6 +11,7 @@ cabal-format-version: "3.0"
 packages:
     "Andreas Abel <andreas.abel@gu.se> @andreasabel":
         - BNFC
+        - STMonadTrans
 
     "Diogo Biazus <diogo@biazus.ca>":
         - hasql-notifications