diff --git a/codex-rs/core/BUILD.bazel b/codex-rs/core/BUILD.bazel
index ad58af2a81..079be93986 100644
--- a/codex-rs/core/BUILD.bazel
+++ b/codex-rs/core/BUILD.bazel
@@ -50,6 +50,7 @@ codex_rust_crate(
     },
     test_sizes = {
         "core-all-test-windows-cross": "medium",
+        "core-unit-tests": "medium",
         "core-unit-tests-windows-cross": "medium",
     },
     test_tags = ["no-sandbox"],
diff --git a/codex-rs/external-agent-sessions/BUILD.bazel b/codex-rs/external-agent-sessions/BUILD.bazel
index 5a09983390..7222ab0994 100644
--- a/codex-rs/external-agent-sessions/BUILD.bazel
+++ b/codex-rs/external-agent-sessions/BUILD.bazel
@@ -3,4 +3,7 @@ load("//:defs.bzl", "codex_rust_crate")
 codex_rust_crate(
     name = "external-agent-sessions",
     crate_name = "codex_external_agent_sessions",
+    test_sizes = {
+        "external-agent-sessions-unit-tests-windows-cross": "medium",
+    },
 )
diff --git a/codex-rs/thread-store/BUILD.bazel b/codex-rs/thread-store/BUILD.bazel
index 5d800f51fe..7a96b6940a 100644
--- a/codex-rs/thread-store/BUILD.bazel
+++ b/codex-rs/thread-store/BUILD.bazel
@@ -3,4 +3,7 @@ load("//:defs.bzl", "codex_rust_crate")
 codex_rust_crate(
     name = "thread-store",
     crate_name = "codex_thread_store",
+    test_sizes = {
+        "thread-store-unit-tests-windows-cross": "medium",
+    },
 )