# Miner cannot be upgraded on some hills

- Page: https://blockadebrigade.com/discuss/bugs/33-miner-cannot-be-upgraded-on-some-hills
- Site: Blockade Brigade, a tower defense game for Windows PC (https://blockadebrigade.com/)
- Last updated: 2026-10-19
- Text generated: 2026-11-02 08:31 UTC

Board: [Bugs](https://blockadebrigade.com/discuss/bugs)
Status: Fixed

## dman, 2026-10-19

Status: Fixed in 0.1.7

Reported: Oct 19, 2026
Fixed: Oct 19, 2026, 9:56 AM (Eastern) in 0.1.7
Seen in version: 0.1.6 and earlier

What happened: A Miner could only be upgraded when there were open slopes beside it.

What was expected: A Miner should upgrade wherever it stands.

Steps: Build a Miner on a hilltop with no open slopes around it and try to upgrade it.

How often: Every time.

What was fixed: A Miner can be upgraded 3 times (up to level 4) on any hilltop; each upgrade adds a conveyor belt on another side of the hill.

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About the whole site: https://blockadebrigade.com/llms.txt