diff --git a/build-constraints.yaml b/build-constraints.yaml
index 7e92a94d..222ef705 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3288,7 +3288,7 @@ expected-test-failures:
     - servant # https://github.com/haskell-servant/servant/issues/698
     - snap-core # https://github.com/snapframework/snap-core/issues/26
     - stm-delay # https://github.com/joeyadams/haskell-stm-delay/issues/5
-
+    - language-c # 0.6 https://github.com/visq/language-c/issues/30
 
 # end of expected-test-failures