diff --git a/build-constraints.yaml b/build-constraints.yaml
index 353759dd..fb94e411 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3848,6 +3848,9 @@ expected-test-failures:
     # https://github.com/adamgundry/units-parser/issues/1
     - units-parser
 
+    # https://github.com/fcomb/pkcs10-hs/issues/2
+    - pkcs10
+
 # end of expected-test-failures
 
 # Benchmarks which are known not to build. Note that, currently we do not run