diff --git a/build-constraints.yaml b/build-constraints.yaml
index 3ed9fbe4..c51626d5 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2495,6 +2495,9 @@ packages:
         - diagrams-svg < 1.4.0.4
         - optparse-generic < 1.1.2
 
+        # https://github.com/fpco/stackage/issues/1806
+        - hquantlib < 0.0.3.1
+
 # end of packages