diff --git a/build-constraints.yaml b/build-constraints.yaml
index 632b7442..396b2e53 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -8453,6 +8453,7 @@ packages:
 
         # https://github.com/commercialhaskell/stackage/issues/7426
         - emacs-module < 0.2.1.1
+        - json-spec-elm-servant < 0.4.1.0
 
         # https://github.com/commercialhaskell/stackage/issues/7425
         - crypton-connection < 0.4.0