diff --git a/build-constraints.yaml b/build-constraints.yaml
index 8d2fdfa2..84c1d418 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -9276,6 +9276,7 @@ expected-test-failures:
     - unicode-data # 0.4.0.1
     - sydtest # 0.15.1.1
     - coinor-clp # 0.0.0.2
+    - SpatialMath # 0.2.7.1 https://github.com/ghorn/spatial-math/issues/10
 
     # Intermittent failures or unreliable. These tests may pass when
     # re-enabled, but will eventually fail again.