diff --git a/doc/Manual.md b/doc/Manual.md
index 70f76f722..27274a9f4 100644
--- a/doc/Manual.md
+++ b/doc/Manual.md
@@ -21,7 +21,8 @@ after installation of 'go' go straight forward to 'git clone [...]'
 
 If you are using Linux, BSD or Windows, the only way to install restic on your
 system right now is to compile it from source. restic is written in the Go
-programming language and you need at least Go version 1.3. See the [Getting
+programming language and you need at least Go version 1.6. Building restic may
+also work with older versions of Go, but that's not supported. See the [Getting
 started](https://golang.org/doc/install) guide of the Go project for
 instructions how to install Go.