diff --git a/build-constraints.yaml b/build-constraints.yaml
index e5f3e154..2fc14e78 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -872,7 +872,7 @@ packages:
         - servant-lucid
         - servant-blaze
         - servant-foreign
-        - servant-mock
+        # - servant-mock # https://github.com/haskell-servant/servant-mock/issues/3
         - servant-cassava
 
     "Alexandr Ruchkin <voidex@live.com> @mvoidex":