diff --git a/src/io/ioutil/tempfile.go b/src/io/ioutil/tempfile.go
index 4b272e5a5d2..c43db2c080d 100644
--- a/src/io/ioutil/tempfile.go
+++ b/src/io/ioutil/tempfile.go
@@ -20,7 +20,7 @@ import (
 // to find the pathname of the file. It is the caller's responsibility
 // to remove the file when no longer needed.
 //
-// As of Go 1.16, this function simply calls os.CreateTemp.
+// As of Go 1.17, this function simply calls os.CreateTemp.
 func TempFile(dir, pattern string) (f *os.File, err error) {
 	return os.CreateTemp(dir, pattern)
 }
@@ -35,7 +35,7 @@ func TempFile(dir, pattern string) (f *os.File, err error) {
 // will not choose the same directory. It is the caller's responsibility
 // to remove the directory when no longer needed.
 //
-// As of Go 1.16, this function simply calls os.MkdirTemp.
+// As of Go 1.17, this function simply calls os.MkdirTemp.
 func TempDir(dir, pattern string) (name string, err error) {
 	return os.MkdirTemp(dir, pattern)
 }