diff --git a/bazel/src/main/java/com/google/api/codegen/bazel/ApiVersionedDir.java b/bazel/src/main/java/com/google/api/codegen/bazel/ApiVersionedDir.java
index 8e7c923..2091b3d 100644
--- a/bazel/src/main/java/com/google/api/codegen/bazel/ApiVersionedDir.java
+++ b/bazel/src/main/java/com/google/api/codegen/bazel/ApiVersionedDir.java
@@ -71,6 +71,7 @@ class ApiVersionedDir {
     "main_service",
     "bundle_config",
     "iam_service",
+    "mixins",
     // Ruby:
     "ruby_cloud_title",
     "ruby_cloud_description",