diff --git a/build-constraints.yaml b/build-constraints.yaml
index e08cf598..1affdf50 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1186,7 +1186,7 @@ packages:
         - hledger
         - hledger-ui < 0  # via brick, via data-clist, via QuickCheck https://github.com/commercialhaskell/stackage/issues/4444
         - hledger-web
-        - hledger-api
+        - hledger-api < 0 # build failure against swagger2
         #
         - quickbench
         - regex-compat-tdfa