diff --git a/build-constraints.yaml b/build-constraints.yaml
index fb94e411..0ca51246 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3851,6 +3851,9 @@ expected-test-failures:
     # https://github.com/fcomb/pkcs10-hs/issues/2
     - pkcs10
 
+    # https://github.com/simonmichael/hledger/issues/596
+    - hledger-lib
+
 # end of expected-test-failures
 
 # Benchmarks which are known not to build. Note that, currently we do not run