diff --git a/gotooltest/setup.go b/gotooltest/setup.go
index 6673580f..122d2464 100644
--- a/gotooltest/setup.go
+++ b/gotooltest/setup.go
@@ -22,7 +22,7 @@ import (
 )
 
 var (
-	goVersionRegex = regexp.MustCompile(`^go([1-9][0-9]*)\.(0|[1-9][0-9]*)$`)
+	goVersionRegex = regexp.MustCompile(`^go([1-9][0-9]*)\.([1-9][0-9]*)$`)
 
 	goEnv struct {
 		GOROOT      string