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# Upgrading Tendermint Core
This guide provides steps to be followed when you upgrade your applications to
a newer version of Tendermint Core.
## Upgrading from 0.23.0 to 0.24.0
New 0.24.0 release contains a lot of changes to the state and types. It's not
compatible to the old versions.
To reset the state do:
```
$ tendermint unsafe_reset_all
```
### Config changes
`p2p.max_num_peers` was removed in favor of `p2p.max_num_inbound_peers` and
`p2p.max_num_outbound_peers`.
```
# Maximum number of inbound peers
max_num_inbound_peers = 40
# Maximum number of outbound peers to connect to, excluding persistent peers
max_num_outbound_peers = 10
```
As you can see, the default ratio of inbound/outbound peers is 4/1. The reason
as we want it to be easier for new nodes to connect to the network. You can
tweak these parameters to alter the network topology.