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 # webprofile-ref-project
 Reference implementation for the book, "A guide to OpenSAML V3" 
 
-The book is availible here: https://gumroad.com/l/a-guide-to-opensaml-v3
+The book is availible here: https://blog.samlsecurity.com/a-guide-to-opensamlv3.html
 
 The sole purpose of the sample project is to illustrate the function of OpenSAML. 
 Although, it can be a very good place to start when experimenting with OpenSAML, it should not be used for production purposes.
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