diff --git a/build-constraints.yaml b/build-constraints.yaml
index 364af950..1e2bc0e7 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4436,6 +4436,9 @@ packages:
 
     "Michael B. Gale <m.gale@warwick.ac.uk> @mbg":
         - c14n
+        - katip-logstash
+        - logstash
+        - monad-logger-logstash
         - moss
         - wai-rate-limit
         - wai-rate-limit-redis