diff --git a/build-constraints.yaml b/build-constraints.yaml
index 37beee47..1e545e53 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -592,7 +592,7 @@ packages:
         - resistor-cube
         - linear-circuit
         # Not a maintainer
-        - cabal-plan < 0 # 0.7.2.3 Missing release compatible with semialign-1.3
+        - cabal-plan < 0 # v0.7.3.0, which is the release compatible with semialign-1.3, requires base-compat-0.13 which we don't have yet, see #6906
         - topograph
         - ix-shapable
         - hsshellscript < 0 # 3.5.0 compile fail https://github.com/commercialhaskell/stackage/issues/6762