diff --git a/build-constraints.yaml b/build-constraints.yaml
index c1ae08b4..2660fe60 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -418,7 +418,7 @@ packages:
 
     "Omari Norman <omari@smileystation.com> @massysett":
         - rainbow
-        - rainbox < 0 # GHC 8.4 via rainbow
+        - rainbox
         - multiarg
         - Earley
         - ofx