diff --git a/build-constraints.yaml b/build-constraints.yaml
index 74acaff8..711cf73c 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -13,6 +13,7 @@ packages:
         - hebrew-time
         - keter
         - markdown
+        - mime-mail
         - mime-mail-ses
         - monadcryptorandom
         - network-conduit-tls