diff --git a/build-constraints.yaml b/build-constraints.yaml
index ed18752d..5f5d76d3 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1724,7 +1724,7 @@ packages:
         - random-tree
         - clumpiness
         - find-clumpiness
-        - blosum
+        # GHC 8 - blosum
 
     "Simon Marechal <bartavelle@gmail.com> @bartavelle":
         # GHC 8 - compactmap