diff --git a/build-constraints.yaml b/build-constraints.yaml
index 519b5ef3..a0397cf0 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -684,6 +684,10 @@ packages:
         - hi-file-parser
         - rio-prettyprint
 
+    "Brandon Barker <brandon.barker@gmail.com> @bbarker":
+        - unexceptionalio
+        - unexceptionalio-trans
+
     "Omari Norman <omari@smileystation.com> @massysett":
         - rainbow
         - rainbox