diff --git a/build-constraints.yaml b/build-constraints.yaml
index 0ae91f51..29bec10b 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3047,6 +3047,7 @@ packages:
         - numhask-range
         - perf
         - online
+        - chart-unit
 
     "Iphigenia Df <iphydf@gmail.com> @iphydf":
         - data-msgpack