diff --git a/build-constraints.yaml b/build-constraints.yaml
index 622e087e..9d405aff 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -239,7 +239,7 @@ packages:
         - network-multicast
         - xeno
         - goggles
-        - plot-light
+        - plot-light < 0 # GHC 8.4 via palette
         - mapquest-api
 
     "Joseph Canero <jmc41493@gmail.com> @caneroj1":