can't install sqlalchemy-opentracing==0.1.1

[kkasravi]

Output is

Requirement already up-to-date: opentracing==1.2.2 in /Users/kdkasrav/.pyenv/versions/2.7.13/envs/helium/lib/python2.7/site-packages (from -r requirements.txt (line 29))
Requirement already up-to-date: Flask-OpenTracing==0.1.7 in /Users/kdkasrav/.pyenv/versions/2.7.13/envs/helium/lib/python2.7/site-packages (from -r requirements.txt (line 30))
Collecting sqlalchemy-opentracing==0.1.1 (from -r requirements.txt (line 31))
  Downloading sqlalchemy_opentracing-0.1.1.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/private/var/folders/kp/mwdtl3v16q11s_hhm_53bd3c0000gp/T/pip-build-vgOFsL/sqlalchemy-opentracing/setup.py", line 3, in <module>
        version = open('VERSION').read()
    IOError: [Errno 2] No such file or directory: 'VERSION'

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/kp/mwdtl3v16q11s_hhm_53bd3c0000gp/T/pip-build-vgOFsL/sqlalchemy-opentracing/