diff --git a/.github/workflows/check-pr.yml b/.github/workflows/check-pr.yml
index 79d0b5e2d0..f631f69dea 100644
--- a/.github/workflows/check-pr.yml
+++ b/.github/workflows/check-pr.yml
@@ -31,4 +31,4 @@ jobs:
 
           It may help to set your fork's default branch to `bugfix-2.0.x`.
 
-          See [this page](http://marlinfw.org/docs/development/getting_started_pull_requests.html) for full instructions.
+          See [this page](https://marlinfw.org/docs/development/getting_started_pull_requests.html) for full instructions.
diff --git a/Marlin/src/HAL/NATIVE_SIM/fastio.h b/Marlin/src/HAL/NATIVE_SIM/fastio.h
index de8013b1e5..f501afdbaa 100644
--- a/Marlin/src/HAL/NATIVE_SIM/fastio.h
+++ b/Marlin/src/HAL/NATIVE_SIM/fastio.h
@@ -44,7 +44,7 @@
  *
  * Now you can simply SET_OUTPUT(STEP); WRITE(STEP, HIGH); WRITE(STEP, LOW);
  *
- * Why double up on these macros? see http://gcc.gnu.org/onlinedocs/cpp/Stringification.html
+ * Why double up on these macros? see https://gcc.gnu.org/onlinedocs/cpp/Stringification.html
  */
 
 /// Read a pin
diff --git a/Marlin/src/module/thermistor/thermistor_504.h b/Marlin/src/module/thermistor/thermistor_504.h
index 61ce3ae135..0724e49b9d 100644
--- a/Marlin/src/module/thermistor/thermistor_504.h
+++ b/Marlin/src/module/thermistor/thermistor_504.h
@@ -16,7 +16,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
diff --git a/Marlin/src/module/thermistor/thermistor_505.h b/Marlin/src/module/thermistor/thermistor_505.h
index 6c94b0e1b4..1377b43d24 100644
--- a/Marlin/src/module/thermistor/thermistor_505.h
+++ b/Marlin/src/module/thermistor/thermistor_505.h
@@ -16,7 +16,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
diff --git a/Marlin/src/pins/sanguino/pins_ZMIB_V2.h b/Marlin/src/pins/sanguino/pins_ZMIB_V2.h
index 4e8731c1cb..aa3ce556d1 100644
--- a/Marlin/src/pins/sanguino/pins_ZMIB_V2.h
+++ b/Marlin/src/pins/sanguino/pins_ZMIB_V2.h
@@ -36,7 +36,7 @@
  * If you don't have a chip programmer you can use a spare Arduino plus a few
  * electronic components to write the bootloader.
  *
- * See http://www.instructables.com/id/Burn-Arduino-Bootloader-with-Arduino-MEGA/
+ * See https://www.instructables.com/Burn-Arduino-Bootloader-with-Arduino-MEGA/
  */
 
 /**
diff --git a/Marlin/src/pins/stm32f1/pins_GTM32_PRO_VB.h b/Marlin/src/pins/stm32f1/pins_GTM32_PRO_VB.h
index 4b5d38e8c5..646638dae2 100644
--- a/Marlin/src/pins/stm32f1/pins_GTM32_PRO_VB.h
+++ b/Marlin/src/pins/stm32f1/pins_GTM32_PRO_VB.h
@@ -23,7 +23,7 @@
 
 /**
  * Geeetech GTM32 Pro VB board pin assignments
- * http://www.geeetech.com/wiki/index.php/File:Hardware_GTM32_PRO_VB.pdf
+ * https://www.geeetech.com/wiki/index.php/File:Hardware_GTM32_PRO_VB.pdf
  *
  * Also applies to GTM32 Pro VD
  */
diff --git a/Marlin/src/pins/stm32f4/pins_ARTILLERY_RUBY.h b/Marlin/src/pins/stm32f4/pins_ARTILLERY_RUBY.h
index 47d009c5a6..7413b9b064 100644
--- a/Marlin/src/pins/stm32f4/pins_ARTILLERY_RUBY.h
+++ b/Marlin/src/pins/stm32f4/pins_ARTILLERY_RUBY.h
@@ -16,7 +16,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once