Update documented required Go version
diff --git a/README.md b/README.md
index c00e960..b375e4a 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@
The CLI tool is written in Go and should be obtained and built as a standard Go project.
You will need the following tools to build it:
-- Go (min version 1.5.1), with full cross-compiler support (see https://golang.org/dl).
+- Go (min version 1.6), with full cross-compiler support (see https://golang.org/dl).
On Mac, if using Homebrew, use "brew install go --with-cc-all"
- godep (see https://github.com/tools/godep)
