Problem with imports on Ape Project

[meatballs]

When I use dependencies and import remapping within an Ape project, I get "File not found" errors reported in my import statements.

As per the Ape dependencies docs, I have the following in my ape-config.yaml:

dependencies:
  - name: OpenZeppelin
    github: OpenZeppelin/openzeppelin-contracts
    version: 4.9.3

solidity:
  import_remapping:
    - "@openzeppelin=OpenZeppelin/4.9.3"

Then, within a solidity file:

import "@openzeppelin/token/ERC721/ERC721.sol";

If I run ape compile, everything is happy and my contract compiles ok

But, in my editor (neovim), the language server gives:

Source "@openzeppelin/token/ERC721/ERC721.sol" not found: File not found. Searched the following locations: "". solidity (6275) [5, 1]