diff --git a/build-constraints.yaml b/build-constraints.yaml
index bef67c85..81e7182d 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1975,10 +1975,10 @@ packages:
 
     "Gregory W. Schwartz <gregory.schwartz@drexel.edu> @GregorySchwartz":
         - fasta
-        - diversity
+        # - diversity # build failure with MonadRandom 0.5 # https://github.com/fpco/stackage/issues/2180
         - modify-fasta
         - tree-fun
-        - random-tree
+        # - random-tree # build failure with MonadRandom-0.5 # https://github.com/fpco/stackage/issues/2180
         - clumpiness
         # - find-clumpiness # build failure against optparse-applicative https://github.com/GregorySchwartz/find-clumpiness/issues/1
         - blosum