Can't find NVidia cudatoolkit package when creating environment from .yml

Hopefully someone can help me, I've tried to search the internet for a solution, but can't seem to find a solution.. I'm trying to create an environment using conda env create -n deltaconv -f environment.yml and somehow conda I'm getting this response:

[Folder]>conda env create -n deltaconv -f environment.yml
Collecting package metadata (repodata.json): done
Solving environment: failed

ResolvePackageNotFound:
  - nvidia::cudatoolkit=11.3

I've just freshly installed Miniconda for the task and the environment looks like this:

channels:
  - nvidia
  - pytorch
  - pyg
dependencies:
  - pip=21.2.4
  - python=3.9.12
  - setuptools=52.0.0
  - wheel=0.36.2
  - protobuf~=3.19.0
  - nvidia::cudatoolkit=11.3
  - pytorch::pytorch=1.11.0
  - pytorch::torchvision
  - pytorch::torchaudio
  - pyg::pyg=2.0.4
  - pip:
    - numpy==1.21.5
    - progressbar2==4.0.0
    - tensorboard==2.8.0
    - jupyter==1.0.0
    - openmesh==1.2.1
    - h5py==3.6.0
    - pytest==7.1.2
    - deltaconv==1.0.0

Does anyone know why conda is unable to find cudatoolkit 11.3 from the nvidia channel?