diff --git a/build-constraints.yaml b/build-constraints.yaml
index 8825d011..60de3a52 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5333,7 +5333,7 @@ packages:
 
     "Kazu Yamamoto <kazu@iij.ad.jp> @kazu-yamamoto":
         - crypton < 1.0.0   # https://github.com/commercialhaskell/stackage/issues/7398
-        - crypton-connection
+        - crypton-connection < 0.4.0 # https://github.com/commercialhaskell/stackage/issues/7425
         - crypton-x509
         - crypton-x509-store
         - crypton-x509-system