diff --git a/build-constraints.yaml b/build-constraints.yaml
index f9bb2681..c4e8e9aa 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -442,7 +442,7 @@ packages:
         - include-file
         # GHC 8 - matrix
         - pcre-light
-        # GHC 8 - phantom-state
+        - phantom-state
         - post-mess-age
         - sorted-list