diff --git a/build-constraints.yaml b/build-constraints.yaml
index 5ab3ffce..8e34c458 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5545,9 +5545,11 @@ skipped-tests:
     - algebraic-graphs # https://github.com/commercialhaskell/stackage/issues/4670
     - bugsnag-haskell # https://github.com/commercialhaskell/stackage/issues/4759
 
+    # executable not found
+    - egison # https://github.com/egison/egison/issues/250
+
     # TODO
     - rpmbuild-order
-    - egison
 
 
 # end of skipped-tests
@@ -5912,6 +5914,7 @@ expected-haddock-failures:
     # https://github.com/commercialhaskell/stackage/issues/5681
     - hw-json
 
+    # https://github.com/egison/egison/issues/251
     - egison
 
 # end of expected-haddock-failures