diff --git a/build-constraints.yaml b/build-constraints.yaml
index 8ca90570..afc42828 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3045,6 +3045,9 @@ expected-test-failures:
 
     # 1.3.1.1 https://github.com/Twinside/asciidiagram/issues/3
     - asciidiagram
+
+    # https://github.com/haskoin/haskoin/issues/285
+    - haskoin-core
 # end of expected-test-failures
 
 # Benchmarks which are known not to build. Note that, currently we do not run