diff --git a/qsl.toml b/qsl.toml
index 7925299..649a037 100644
--- a/qsl.toml
+++ b/qsl.toml
@@ -8,4 +8,4 @@ artifact_contract = "docs/artifact_contract.md"
 snapshot_contract = "docs/artifact_contract.md"
 
 [qsl.compat]
-bundle = "2026.08.0"
+bundle = "2026.09.0"
diff --git a/tests/test_qsl_metadata.py b/tests/test_qsl_metadata.py
index d42f718..9065af6 100644
--- a/tests/test_qsl_metadata.py
+++ b/tests/test_qsl_metadata.py
@@ -16,6 +16,6 @@ def test_qsl_metadata_has_compat_bundle() -> None:
     assert qsl["upgrade_ring"] == "ring_c"
     assert qsl.get("repo") == "CnEquitySnapshotPipelines"
     compat = qsl["compat"]
-    assert compat["bundle"] == "2026.08.0"
+    assert compat["bundle"] == "2026.09.0"
     assert qsl.get("artifact_contract") == "docs/artifact_contract.md"
     assert qsl.get("snapshot_contract") == "docs/artifact_contract.md"