diff --git a/build-constraints.yaml b/build-constraints.yaml
index 1aecdac7..6aa92485 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -8553,6 +8553,9 @@ expected-test-failures:
     - genvalidity-appendful # https://github.com/commercialhaskell/stackage/issues/7465
     - genvalidity-mergeful # https://github.com/commercialhaskell/stackage/issues/7465
     - sydtest-autodocodec # https://github.com/commercialhaskell/stackage/issues/7465
+    - regex-tdfa # 1.3.2.4 doctest-0.4
+    - free-foil # 0.20 doctest-0.4
+    - vary # 0.1.1.3 doctest-0.4
 
     # Intermittent failures or unreliable. These tests may pass when
     # re-enabled, but will eventually fail again.