diff --git a/docs/index.md b/docs/index.md
index 7917645..b7e8624 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -13,7 +13,7 @@ since it uses the WebExtensions API.
 
 ### Install Vim Vixen
 
-Vim Vixen is supported on Firefox 60 ESR.  Please latest version of stable ESR
+Vim Vixen is supported on Firefox 68 ESR.  Please latest version of stable ESR
 from the [download page](https://www.mozilla.org/en-US/firefox/).
 You can install Vim Vixen from [Firefox add-ons (addons.mozilla.org)][AMO], and
 manage installed addon-ons on Firefox preferences `about:preferences`.