diff --git a/doc/manual.asciidoc b/doc/manual.asciidoc
index 3c42aa740e..e728c9518d 100644
--- a/doc/manual.asciidoc
+++ b/doc/manual.asciidoc
@@ -1,6 +1,6 @@
 The Ninja build system
 ======================
-v1.8.2, Sep 2017
+v1.9.0, Jan 2019
 
 
 Introduction