Error when running pip install diagram

[jafetmorales]

This is the output when running pip install diagram

Collecting diagram
  Downloading https://files.pythonhosted.org/packages/0a/b8/59ac7aee973902f890929441fca8183558735cf1c8f9b1a1f45cd3a45a7e/diagram-0.2.25.tar.gz (95kB)
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "C:\Users\jmorales\AppData\Local\Temp\pip-install-deymhmow\diagram\setup.py", line 12, in <module>
        long_description=read(README.md),
      File "C:\Users\jmorales\AppData\Local\Temp\pip-install-deymhmow\diagram\setup.py", line 6, in read
        return open(filename).read()
      File "c:\users\jmorales\appdata\local\programs\python\python35\lib\encodings\cp1252.py", line 23, in decode
        return codecs.charmap_decode(input,self.errors,decoding_table)[0]
    UnicodeDecodeError: charmap codec cant decode byte 0x8f in position 755: character maps to 

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in C:\Users\jmorales\AppData\Local\Temp\pip-install-deymhmow\diagram\

This is my setup:

Python version: 3.5
OS: Windows 10 Home
System Type: 64-bit Operating System, x64-based processor
Processor: AMD A10-8700P Radeon R6