diff --git a/build-constraints.yaml b/build-constraints.yaml
index 3e1a609f..736e9448 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -7867,6 +7867,9 @@ packages:
 
         # https://github.com/commercialhaskell/stackage/issues/6925
         - fortran-src < 0.14
+
+        # https://github.com/commercialhaskell/stackage/issues/6926
+        - singleton-bool < 0.1.7
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of