diff --git a/build-constraints.yaml b/build-constraints.yaml
index fa24b6a4..d40e9e4c 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1906,7 +1906,7 @@ packages:
     "Greg V <greg@unrelenting.technology> @myfreeweb":
         - pcre-heavy
         - http-link-header
-        - microformats2-parser
+        - microformats2-parser < 0 # 1.0.2.2 compile fail aeson >= 2
         - hspec-expectations-pretty-diff
         - wai-cli
         - magicbane