diff --git a/build-constraints.yaml b/build-constraints.yaml
index f41f60d7..f274f8e3 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1666,7 +1666,11 @@ packages:
 
     "Joe Hermaszewski <stackage@monoid.al> @expipiplus1":
         - exact-real
-
+    
+    "Jonatan Sundqvist jonatanhsundqvist@gmail.com @SwiftsNamesake":
+        - Cartesian
+        - Michelangelo
+    
     "Stackage upper bounds":
         # https://github.com/fpco/stackage/issues/537
         - zlib < 0.6