diff --git a/src/en/guide/testing/unitTesting/mockingCollaborators.gdoc b/src/en/guide/testing/unitTesting/mockingCollaborators.gdoc
index c267a3180cc..a6b840f59b2 100644
--- a/src/en/guide/testing/unitTesting/mockingCollaborators.gdoc
+++ b/src/en/guide/testing/unitTesting/mockingCollaborators.gdoc
@@ -1 +1 @@
-The Spock Framework manual has a chapter on [Interaction Based Testing|http://spock-framework.readthedocs.org/en/latest/interaction_based_testing.html] which also explains mocking collaborators.
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+The Spock Framework manual has a chapter on [Interaction Based Testing|http://spockframework.github.io/spock/docs/1.0/interaction_based_testing.html] which also explains mocking collaborators.
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