diff --git a/build-constraints.yaml b/build-constraints.yaml
index 3e9805e1..b46450d5 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -8672,6 +8672,7 @@ skipped-tests:
 
     # general failures
     - aern2-mp            # https://github.com/michalkonecny/aern2/issues/11
+    - thyme # quickcheck flakiness
 
     # ???
     - chronos # 1.1.6.2 chronos-test:  executable not found