Python Django:git推送heroku主机失败

我第一次尝试将django web应用程序推送到heroku，出现如下错误消息

Delta compression using up to 4 threads.
Compressing objects: 100% (68/68), done.
Writing objects: 100% (81/81), 105.31 KiB | 0 bytes/s, done.
Total 81 (delta 7), reused 0 (delta 0)
remote: Compressing source files... done.
remote: Building source:
remote:
remote: -----> Python app detected
remote: -----> Installing Python-3.5.0
remote:  !     Requested runtime (Python-3.5.0) is not available for this     stack
(cedar-14).
remote:  !     Aborting.  More info:     https://devcenter.heroku.com/articles/pytho
n-support
remote:
remote:  !     Push rejected, failed to compile Python app
remote:
remote: Verifying deploy...
remote:
remote: !       Push rejected to polar-lake-12528.
remote:
To https://git.heroku.com/polar-lake-12528.git
 ! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'https://git.heroku.com/polar-lake-12528.git'

My runtime.txt看起来像：

python-3.5.1

---

我已经更改为小写，并将python版本更新为3.5.1，但仍然不起作用。

不支持python 3.5.0。您可以将其更改为

python-3.5.1

---

有关支持的运行时，请参阅。

我已经更新了python版本，但heroku仍然检测到python 3.5.0。将runtime.txt更改为python-3.5.1后，它将不起作用。