diff --git a/Changelog b/Changelog
index 9d10ef1..4758acf 100644
--- a/Changelog
+++ b/Changelog
@@ -1,5 +1,9 @@
 # Changelog
 
+## [0.24]
+### Added
+- Gpio: 5V control messages: GetOtgMode, GetOtgModeResponse, SetOtgMode
+
 ## [0.23]
 ### Added
 - Storage: New TarExtract request to unpack a tar archive to a given directory
diff --git a/flipper.proto b/flipper.proto
index a4527e6..989af13 100644
--- a/flipper.proto
+++ b/flipper.proto
@@ -123,6 +123,9 @@ message Main {
         .PB_Gpio.ReadPin gpio_read_pin = 55;
         .PB_Gpio.ReadPinResponse gpio_read_pin_response = 56;
         .PB_Gpio.WritePin gpio_write_pin = 57;
+        .PB_Gpio.GetOtgMode gpio_get_otg_mode = 72;
+        .PB_Gpio.GetOtgModeResponse gpio_get_otg_mode_response = 73;
+        .PB_Gpio.SetOtgMode gpio_set_otg_mode = 74;
         .PB_App.AppStateResponse app_state_response = 58;
         .PB_Property.GetRequest property_get_request = 61;
         .PB_Property.GetResponse property_get_response = 62;
diff --git a/gpio.proto b/gpio.proto
index 446ae14..236767b 100644
--- a/gpio.proto
+++ b/gpio.proto
@@ -25,6 +25,11 @@ enum GpioInputPull {
     DOWN = 2;
 };
 
+enum GpioOtgMode {
+    OFF = 0;
+    ON = 1;
+};
+
 message SetPinMode {
     GpioPin pin = 1;
     GpioPinMode mode = 2;
@@ -55,3 +60,14 @@ message WritePin {
     GpioPin pin = 1;
     uint32 value = 2;
 }
+
+message GetOtgMode {
+};
+
+message GetOtgModeResponse {
+    GpioOtgMode mode = 1;
+};
+
+message SetOtgMode {
+    GpioOtgMode mode = 1;
+};