diff --git a/build-constraints.yaml b/build-constraints.yaml
index 7ee9eae3..8326da84 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3296,6 +3296,7 @@ expected-test-failures:
     - folds # https://github.com/ekmett/folds/issues/12
     - hspec-expectations-pretty-diff # GHC 8 issue not reported upstream since issue tracker disabled
     - language-lua2 # https://github.com/mitchellwrosen/language-lua2/issues/4
+    - picosat # https://github.com/fpco/stackage/pull/2382
     - sourcemap # https://github.com/chrisdone/sourcemap/issues/3
     - text-ldap # # https://github.com/khibino/haskell-text-ldap/issues/1
     - thyme # https://github.com/liyang/thyme/issues/50