# SpecVersionNeedsToIncrease (/docs/errors/chain/SpecVersionNeedsToIncrease)

The new runtime's `spec_version` is not greater than the current one, so the upgrade is rejected. Check the `RuntimeVersion` in the new wasm and bump `spec_version` above the version currently on chain.

Declared by the `System` pallet; it classifies to the semantic code [`invalid_argument`](/docs/errors/invalid-argument).

## Remediation [#remediation]

Check the argument values against the operation schema

The same explanation is available in the terminal: `btcli explain SpecVersionNeedsToIncrease`.