diff --git a/build-constraints.yaml b/build-constraints.yaml
index 50198e2c..399ad4a1 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1230,6 +1230,9 @@ expected-haddock-failures:
     # builds. Could consider special-casing this requirement.
     - gtk
 
+    # Not sure why, but it's a temporary package anyway
+    - Cabal-ide-backend
+
 # Benchmarks which should not be built. Note that Stackage does *not* generally
 # build benchmarks. The difference here will be whether dependencies for these
 # benchmarks are included or not.