diff --git a/build-constraints.yaml b/build-constraints.yaml
index f6ea2c64..e01b6151 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3519,7 +3519,6 @@ packages:
         - groundhog-sqlite < 0 # GHC 8.4 via direct-sqlite
         - selda-sqlite < 0 # GHC 8.4 via direct-sqlite
         - djinn-ghc < 0 # GHC 8.4 via djinn-lib
-        - xml-isogen < 0 # GHC 8.4 via dom-parser
         - yesod-auth-fb < 0 # GHC 8.4 via fb
         - disposable < 0 # GHC 8.4 via ghcjs-base-stub
         - javascript-extras < 0 # GHC 8.4 via ghcjs-base-stub