diff --git a/libraries/AP_Gripper/AP_Gripper_EPM.cpp b/libraries/AP_Gripper/AP_Gripper_EPM.cpp
index becb3f2e8b..66b715eb04 100644
--- a/libraries/AP_Gripper/AP_Gripper_EPM.cpp
+++ b/libraries/AP_Gripper/AP_Gripper_EPM.cpp
@@ -26,7 +26,7 @@ void AP_Gripper_EPM::init_gripper()
 {
 #ifdef UAVCAN_NODE_FILE
     _uavcan_fd = ::open(UAVCAN_NODE_FILE, O_CLOEXEC);
-    // http://ardupilot.org/dev/docs/learning-ardupilot-uarts-and-the-console.html
+    // https://ardupilot.org/dev/docs/learning-ardupilot-uarts-and-the-console.html
     ::printf("EPM: UAVCAN fd %d\n", _uavcan_fd);
 #endif
 
diff --git a/libraries/AP_Gripper/AP_Gripper_EPM.h b/libraries/AP_Gripper/AP_Gripper_EPM.h
index afac084911..ca9562b03c 100644
--- a/libraries/AP_Gripper/AP_Gripper_EPM.h
+++ b/libraries/AP_Gripper/AP_Gripper_EPM.h
@@ -5,7 +5,7 @@
  *      Author: Andreas Jochum
  *              Pavel Kirienko <pavel.kirienko@zubax.com> - UAVCAN support
  *
- *      Set-up Wiki: http://copter.ardupilot.org/wiki/common-electro-permanent-magnet-gripper/
+ *      Set-up Wiki: https://copter.ardupilot.org/wiki/common-electro-permanent-magnet-gripper/
  *      EPM docs:    https://docs.zubax.com/opengrab_epm_v3
  */