diff --git a/build-constraints.yaml b/build-constraints.yaml
index fd4dc7cd..dbe717bd 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4760,6 +4760,7 @@ skipped-tests:
 expected-test-failures:
 
     # GHC 8.4
+    - doctest # https://github.com/sol/doctest/issues/198
     - transformers-compat # https://github.com/ekmett/transformers-compat/issues/32