No matching distribution found for pyasn1>=0.1.7

[ShuminY]

I got an issue shown as below. seems it's a new one. any suggestions?
executing command [pip install -U paramiko]
Collecting paramiko
Downloading https://files.pythonhosted.org/packages/3e/db/cb7b6656e0e7387637ce850689084dc0b94b44df31cc52e5fc5c2c4fd2c1/paramiko-2.4.1-py2.py3-none-any.whl (194kB)
100% |████████████████████████████████| 194kB 15kB/s
Collecting pyasn1>=0.1.7 (from paramiko)
Could not find a version that satisfies the requirement pyasn1>=0.1.7 (from paramiko) (from versions: )
No matching distribution found for pyasn1>=0.1.7 (from paramiko)
ERROR: the following rosdeps failed to install
pip: command [pip install -U paramiko] failed

[Thoriny]

i have same problem.
pip install paramiko
Collecting paramiko
Could not find a version that satisfies the requirement paramiko (from versions: )
No matching distribution found for paramiko