diff --git a/doc.go b/doc.go
index f489bfd..4a9dfd7 100644
--- a/doc.go
+++ b/doc.go
@@ -14,7 +14,7 @@
 
 // Blueprint is a meta-build system that reads in Blueprints files that describe
 // modules that need to be built, and produces a Ninja
-// (http://martine.github.io/ninja/) manifest describing the commands that need
+// (https://ninja-build.org/) manifest describing the commands that need
 // to be run and their dependencies.  Where most build systems use built-in
 // rules or a domain-specific language to describe the logic how modules are
 // converted to build rules, Blueprint delegates this to per-project build logic