I have Anaconda installed (Python 2.7.11 |Anaconda custom (64-bit)| (default, Feb 16 2016, 09:58:36) [MSC v.1500 64 bit (AMD64)] on win32) and I am using Spyder 2.3.8
In iOS,
conda update spyder
Your computer is going to start downloading and installing the new version. After finishing, just restart Spyder and that's it.