diff --git a/build-constraints.yaml b/build-constraints.yaml
index 7950726f..bedd352b 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5685,6 +5685,10 @@ expected-test-failures:
     # https://github.com/dhall-lang/dhall-haskell/issues/1891
     - dhall-lsp-server
 
+    - https://github.com/cdornan/fmt/issues/30
+    - fmt
+
+
 # end of expected-test-failures
 
 # Benchmarks which are known not to build. Note that, currently we do not run