diff --git a/README b/README
index 60c282a..8dfe419 100644
--- a/README
+++ b/README
@@ -6,7 +6,7 @@ accompanying the book:
   "Complex Networks: Principles, Methods and Application"
   V. Latora, V. Nicosia, G. Russo, Cambridge University 
   Press (2017), ISBN: 9781107103184
-  http://www.cambridge.org/gb/academic/subjects/physics/statistical-physics/complex-networks-principles-methods-and-applications?format=HB
+  https://www.cambridge.org/9781107103184
 
 NetBunch includes all the programs implementing the algorithms
 described in the Appendices of the book, and several more. If you use