diff --git a/doc/build.md b/doc/build.md
index b3e629d..90511a5 100644
--- a/doc/build.md
+++ b/doc/build.md
@@ -4,12 +4,17 @@
 ## requirements ##
 
 * linux or freebsd
-* go 1.3 or higher
 * libsodium 1.0 or higher
 * imagemagick
 * ffmpegthumbnailer
 * sox
 
+## supported go versions ##
+
+* `go 1.6` or higher with redis driver
+
+* `go 1.3` or higher without redis driver
+
 ## debian ##
 
 
@@ -25,4 +30,8 @@ Check out the repo and build it
     cd nntpchan
     ./build.sh
 
+If you want to build without supporting redis then build with the `--no-redis` flag
+
+    ./build.sh --no-redis
+
 Now configure the database. [next](database.md)