diff --git a/backend/alembic/versions/b057_add_test_review_states.py b/backend/alembic/versions/b057_add_test_review_states.py
new file mode 100644
index 0000000..cc09368
--- /dev/null
+++ b/backend/alembic/versions/b057_add_test_review_states.py
@@ -0,0 +1,44 @@
+"""Add red_review, blue_review states and review-assignment columns to tests.
+
+Revision ID: b057
+Revises: b056
+Create Date: 2026-07-06
+"""
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+revision = "b057"
+down_revision = "b056"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.execute("ALTER TYPE teststate ADD VALUE IF NOT EXISTS 'red_review'")
+    op.execute("ALTER TYPE teststate ADD VALUE IF NOT EXISTS 'blue_review'")
+
+    op.add_column("tests", sa.Column("red_reviewer_assignee", postgresql.UUID(as_uuid=True), sa.ForeignKey("users.id"), nullable=True))
+    op.add_column("tests", sa.Column("red_review_by", postgresql.UUID(as_uuid=True), sa.ForeignKey("users.id"), nullable=True))
+    op.add_column("tests", sa.Column("red_review_at", sa.DateTime(), nullable=True))
+    op.add_column("tests", sa.Column("red_review_notes", sa.Text(), nullable=True))
+    op.add_column("tests", sa.Column("blue_reviewer_assignee", postgresql.UUID(as_uuid=True), sa.ForeignKey("users.id"), nullable=True))
+    op.add_column("tests", sa.Column("blue_review_by", postgresql.UUID(as_uuid=True), sa.ForeignKey("users.id"), nullable=True))
+    op.add_column("tests", sa.Column("blue_review_at", sa.DateTime(), nullable=True))
+    op.add_column("tests", sa.Column("blue_review_notes", sa.Text(), nullable=True))
+    op.add_column("tests", sa.Column("system_gaps", sa.Text(), nullable=True))
+
+
+def downgrade() -> None:
+    op.drop_column("tests", "system_gaps")
+    op.drop_column("tests", "blue_review_notes")
+    op.drop_column("tests", "blue_review_at")
+    op.drop_column("tests", "blue_review_by")
+    op.drop_column("tests", "blue_reviewer_assignee")
+    op.drop_column("tests", "red_review_notes")
+    op.drop_column("tests", "red_review_at")
+    op.drop_column("tests", "red_review_by")
+    op.drop_column("tests", "red_reviewer_assignee")
+    # PostgreSQL does not support removing enum values; downgrade is a no-op
+    # for the enum part, matching b046_add_disputed_test_state.py.