diff --git a/build-constraints.yaml b/build-constraints.yaml
index 80f4d9c6..b1b06923 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5888,6 +5888,7 @@ expected-test-failures:
     - yesod-page-cursor # https://github.com/freckle/yesod-page-cursor/issues/20
     - string-random # https://github.com/hiratara/hs-string-random/issues/16
     - email-validate # https://github.com/Porges/email-validate-hs/issues/55
+    - heterocephalus # doctest requires hidden shakespeare and blaze-markup
 
     # Recursive deps https://github.com/fpco/stackage/issues/1818
     - options