diff --git a/build-constraints.yaml b/build-constraints.yaml
index 73b9b4e1..46c304bf 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2903,7 +2903,7 @@ packages:
         - antiope-sqs
         - arbor-lru-cache
         - arbor-postgres
-        - asif < 0 # https://github.com/arbor/asif/issues/43
+        - asif
         - avro
         - bits-extra
         - hw-balancedparens