diff --git a/build-constraints.yaml b/build-constraints.yaml
index f75d3760..25ae0e93 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2470,7 +2470,7 @@ packages:
 
     "Peter Simons <simons@cryp.to> @peti":
         - cabal2nix < 0 # via hpack
-        - cabal2spec
+        - cabal2spec < 2.6 # GHC 8.10 via Cabal-3.2
         - cgi < 0 # via multipart
         - distribution-nixpkgs
         - distribution-opensuse