diff --git a/tests/alembic/revisions/__init__.py b/tests/alembic/revisions/__init__.py
index a6166ef3..c5da5e8a 100644
--- a/tests/alembic/revisions/__init__.py
+++ b/tests/alembic/revisions/__init__.py
@@ -4,6 +4,7 @@ from . import (
     test_05486ce795d5_make_session_name_required_on_messages,
     test_066e87ca5b07_align_schema_with_declarative_models,
     test_08894082221a_replace_collection_name_with_observer_,
+    test_7c0d9a4e3b1f_add_unique_index_for_pending_dreams,
     test_20f89a421aff_rename_metamessage_type_to_label,
     test_29ade7350c19_remove_document_level_valid_constraint,
     test_66e63cf2cf77_add_indexes_to_documents_table,
@@ -23,6 +24,7 @@ from . import (
     test_d429de0e5338_adopt_peer_paradigm,
     test_e9b705f9adf9_add_server_defaults_to_timestamp_,
     test_ec8f94139b02_codify_workspace_name_and_message_id_in_,
+    test_f1a2b3c4d5e6_add_reasoning_tree_columns,
 )
 
 __all__ = [
@@ -30,12 +32,14 @@ __all__ = [
     "test_066e87ca5b07_align_schema_with_declarative_models",
     "test_08894082221a_replace_collection_name_with_observer_",
     "test_110bdf470272_rename_deriver_disabled_to_deriver_",
+    "test_119a52b73c60_support_external_embeddings",
     "test_20f89a421aff_rename_metamessage_type_to_label",
     "test_29ade7350c19_remove_document_level_valid_constraint",
     "test_556a16564f50_add_user_id_and_app_id_to_tables",
     "test_564ba40505c5_add_session_name_column_to_documents",
     "test_66e63cf2cf77_add_indexes_to_documents_table",
     "test_76ffba56fe8c_add_error_field_to_queueitem",
+    "test_7c0d9a4e3b1f_add_unique_index_for_pending_dreams",
     "test_88b0fb10906f_add_webhooks_table",
     "test_917195d9b5e9_add_messageembedding_table",
     "test_a1b2c3d4e5f6_initial_schema",
@@ -47,5 +51,5 @@ __all__ = [
     "test_d429de0e5338_adopt_peer_paradigm",
     "test_e9b705f9adf9_add_server_defaults_to_timestamp_",
     "test_ec8f94139b02_codify_workspace_name_and_message_id_in_",
-    "test_119a52b73c60_support_external_embeddings",
+    "test_f1a2b3c4d5e6_add_reasoning_tree_columns",
 ]
diff --git a/tests/alembic/revisions/test_7c0d9a4e3b1f_add_unique_index_for_pending_dreams.py b/tests/alembic/revisions/test_7c0d9a4e3b1f_add_unique_index_for_pending_dreams.py
new file mode 100644
index 00000000..306f40e4
--- /dev/null
+++ b/tests/alembic/revisions/test_7c0d9a4e3b1f_add_unique_index_for_pending_dreams.py
@@ -0,0 +1,23 @@
+"""Hooks for revision 7c0d9a4e3b1f (add_unique_index_for_pending_dreams)."""
+
+from __future__ import annotations
+
+from tests.alembic.registry import register_after_upgrade, register_before_upgrade
+from tests.alembic.verifier import MigrationVerifier
+
+# The partial unique index created by this migration
+INDEX = ("queue", "ux_queue_dream_pending_work_unit_key")
+
+
+@register_before_upgrade("7c0d9a4e3b1f")
+def prepare_add_unique_index_for_pending_dreams(verifier: MigrationVerifier) -> None:
+    """Seed state and assertions before upgrading to 7c0d9a4e3b1f."""
+    # The unique index should not exist before the migration
+    verifier.assert_indexes_not_exist([INDEX])
+
+
+@register_after_upgrade("7c0d9a4e3b1f")
+def verify_add_unique_index_for_pending_dreams(verifier: MigrationVerifier) -> None:
+    """Add assertions validating the effects of 7c0d9a4e3b1f."""
+    # The partial unique index should now exist
+    verifier.assert_indexes_exist([INDEX])