diff --git a/beacon-chain/rpc/prysm/v1alpha1/validator/BUILD.bazel b/beacon-chain/rpc/prysm/v1alpha1/validator/BUILD.bazel
index 50acfb14486..071befabd53 100644
--- a/beacon-chain/rpc/prysm/v1alpha1/validator/BUILD.bazel
+++ b/beacon-chain/rpc/prysm/v1alpha1/validator/BUILD.bazel
@@ -53,6 +53,7 @@ go_library(
         "//beacon-chain/db/kv:go_default_library",
         "//beacon-chain/execution:go_default_library",
         "//beacon-chain/operations/attestations:go_default_library",
+        "//beacon-chain/operations/attestations/mock:go_default_library",
         "//beacon-chain/operations/blstoexec:go_default_library",
         "//beacon-chain/operations/slashings:go_default_library",
         "//beacon-chain/operations/synccommittee:go_default_library",