diff --git a/build-constraints.yaml b/build-constraints.yaml
index ae42f868..2ec1b82e 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1143,6 +1143,9 @@ packages:
         # https://github.com/fpco/stackage/issues/639
         - mainland-pretty < 0.3
 
+        # https://github.com/fpco/stackage/issues/640
+        - time-locale-compat < 0.1.1.0
+
 # Package flags are applied to individual packages, and override the values of
 # global-flags
 package-flags: