1 files changed, 4 insertions, 0 deletions
diff --git a/vendor/golang.org/x/sys/plan9/env_plan9.go b/vendor/golang.org/x/sys/plan9/env_plan9.go
index 7ef9b1872..8f1918004 100644
--- a/vendor/golang.org/x/sys/plan9/env_plan9.go
+++ b/vendor/golang.org/x/sys/plan9/env_plan9.go
@@ -25,3 +25,7 @@ func Clearenv() {
 func Environ() []string {
 	return syscall.Environ()
 }
+
+func Unsetenv(key string) error {
+	return syscall.Unsetenv(key)
+}