go 1.17 required

README.md

diff --git a/README.md b/README.md
index aab2a96..b47a2e7 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@
 
 This library is built in Go, and uses the [support policy](https://golang.org/doc/devel/release.html#policy) of Go as its support policy. The two latest major releases of Go are supported by terraform-exec.
 
-Currently, that means Go **1.16** or later must be used.
+Currently, that means Go **1.17** or later must be used.
 
 ## Usage