diff --git a/migrations/049_expand_child_jobs_model_types.sql b/migrations/049_expand_child_jobs_model_types.sql
new file mode 100644
index 000000000..93cd372d5
--- /dev/null
+++ b/migrations/049_expand_child_jobs_model_types.sql
@@ -0,0 +1,7 @@
+-- Migration 049: Expand child_jobs model_type constraint to all 10 supported models
+-- The original constraint (migration 046) only allowed DQN, PPO, MAMBA-2, TFT, TLOB.
+-- We now support 10 model types via UnifiedTrainable adapters.
+ALTER TABLE child_jobs DROP CONSTRAINT IF EXISTS chk_child_job_model_type;
+ALTER TABLE child_jobs ADD CONSTRAINT chk_child_job_model_type CHECK (
+    model_type IN ('DQN', 'PPO', 'MAMBA-2', 'TFT', 'TLOB', 'TGGN', 'LIQUID', 'KAN', 'XLSTM', 'DIFFUSION')
+);