Using paket from fsharp interactive doesn't work when running it as a fsx script in `dotnet fsi`

This is more of a question since I suspect I'm doing something wrong here.

Description

Using paket from fsharp interactive (https://fsprojects.github.io/Paket/reference-from-repl.html) doesn't work when running it as a fsx script in dotnet fsi

Repro steps

Paste first and second snippet plus first line in third snippet in https://fsprojects.github.io/Paket/reference-from-repl.html into a fsx file (base.fsx)

open System
open System.IO

Environment.CurrentDirectory <- __SOURCE_DIRECTORY__

if not (File.Exists "paket.exe") then
    let url = "http://fsprojects.github.io/Paket/stable"
    use wc = new Net.WebClient()
    let tmp = Path.GetTempFileName()
    let stable = wc.DownloadString(url)
    wc.DownloadFile(stable, tmp)
    File.Move(tmp,Path.GetFileName stable)

#r "paket.exe"
open Paket

// Locate the paket.dependencies file.
let dependencies = Dependencies.Locate(__SOURCE_DIRECTORY__)
// Install a package.
dependencies.Add "FSharp.Data"

Expected behavior

It should work

Actual behavior

error FS0192: internal error: convMethodRef: could not bind to method '"Add"' of type 'Paket.Dependencies, paket, Version=5.241.6.0, Culture=neutral, PublicKeyToken=null'

Known workarounds

None at the moment

Environment ´dotnet --info´:

.NET Core SDK (reflecting any global.json):
 Version:   3.1.100
 Commit:    cd82f021f4

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.17134
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\3.1.100\

Host (useful for support):
  Version: 3.1.0
  Commit:  65f04fb6db

Start by reproducing the snippets from the Paket reference-from-REPL page in base.fsx with dotnet fsi, using the reported .NET SDK environment. Compare the failure at dependencies.Add with the documented workflow; done means the script runs without the FS0192 error and adds FSharp.Data as expected.