diff --git a/build-constraints.yaml b/build-constraints.yaml
index c3768e37..ddeda3b0 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3881,6 +3881,9 @@ expected-test-failures:
     # https://github.com/osa1/hslua/issues/58
     - hslua
 
+    # https://github.com/sdroege/conduit-iconv/issues/2
+    - conduit-iconv
+
 # end of expected-test-failures
 
 # Benchmarks which are known not to build. Note that, currently we do not run