No solution found: Unable to satisfy the following requirements #51

I have version 1.6.1 installed (as a Ruby gem) and there are two private packages hosted on our company's GitLab. I have a project running and the dependencies are installed ok but when I update one of the dependencies (bump the version, even create a tag for that version) and run elm-install, it ends with:

Solving dependencies...
  ▶ No solution found: Unable to satisfy the following requirements:

- `enectiva/entity-tree (< 2.0.0)` required by `user-specified dependency`
- `enectiva/entity-tree (>= 1.0.3)` required by `user-specified dependency`

When I check the cache in ~/.elm-install I can see that it is still at the previous version 1.0.2 (it's on the commit on master branch which is tagged as that version). However, when I list tags, it's aware of the new one:

git tag -l   
1.0.0
1.0.1
1.0.2
1.0.3

When I run git pull from the cache repository, everything works fine.

I assume, I'm doing something wrong, but what?