Failed to install tiktoken

I put tiktoken in requirements.txt. Got following error message:

e[91mERROR: Could not find a version that satisfies the requirement tiktoken (from -r requirements.txt (line 10)) (from versions: none)

e[0me[91mERROR: No matching distribution found for tiktoken (from -r requirements.txt (line 10))

It works in my local environment.

It would fail even I specified a version for tiktoken.