diff --git a/_data/github.yml b/_data/github.yml
index 0ecc3db..0a3f1cf 100644
--- a/_data/github.yml
+++ b/_data/github.yml
@@ -1,3 +1,3 @@
 tag_name: 2.0.0
 v1:
-  tag_name: 1.8.3
+  tag_name: 1.9.0
diff --git a/_data/nav.yml b/_data/nav.yml
index a1f0c38..690d902 100644
--- a/_data/nav.yml
+++ b/_data/nav.yml
@@ -3,7 +3,7 @@
   options:
   - title: "Version 2.0.0"
     url: /docs/
-  - title: "Version 1.8.3"
+  - title: "Version 1.9.0"
     url: /v1/docs/
 
 - title: "Source code"