diff --git a/build-constraints.yaml b/build-constraints.yaml
index 5167e8db..30ccff6b 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5871,6 +5871,7 @@ expected-benchmark-failures:
     - raaz # https://github.com/commercialhaskell/stackage/issues/4766
     - thyme
     - xmlgen # https://github.com/skogsbaer/xmlgen/issues/6
+    - egison # https://github.com/egison/egison/issues/249
 
 # end of expected-benchmark-failures