diff --git a/build-constraints.yaml b/build-constraints.yaml
index ff1cd870..cbb7f943 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4897,6 +4897,9 @@ packages:
       - rebase < 1.7
       - rerebase < 1.7
 
+      # https://github.com/commercialhaskell/stackage/issues/5533
+      - base32 < 0.2
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of