diff --git a/build-constraints.yaml b/build-constraints.yaml
index aae5c910..6e62eddc 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2254,7 +2254,7 @@ packages:
     "Greg Hurrell <greg@hurrell.net>":
         - docvim
     
-    "Ashley Yakeley <ashley@semantic.org>"
+    "Ashley Yakeley <ashley@semantic.org>":
         - countable
 
     # If you stop maintaining a package you can move it here.