1 files changed, 1 insertions, 1 deletions
diff --git a/io/dup.c b/io/dup.c
index 7e395ed73f..e4b5f851e9 100644
--- a/io/dup.c
+++ b/io/dup.c
@@ -13,7 +13,7 @@
 
    You should have received a copy of the GNU Lesser General Public
    License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #include <errno.h>
 #include <fcntl.h>