diff --git a/build-constraints.yaml b/build-constraints.yaml
index 2a1443b5..6453f87b 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -873,7 +873,7 @@ packages:
         - servant-lucid
         - servant-blaze
         - servant-foreign
-        # - servant-mock # https://github.com/haskell-servant/servant-mock/issues/3
+        - servant-mock
         - servant-cassava
 
     "Alexandr Ruchkin <voidex@live.com> @mvoidex":