diff --git a/dts/upstream/src/arm/st/stm32h743.dtsi b/dts/upstream/src/arm/st/stm32h743.dtsi
index b8d4c44c8a82..2f19cfbc57ad 100644
--- a/dts/upstream/src/arm/st/stm32h743.dtsi
+++ b/dts/upstream/src/arm/st/stm32h743.dtsi
@@ -211,6 +211,14 @@
 			};
 		};
 
+		uart8: serial@40007c00 {
+			compatible = "st,stm32h7-uart";
+			reg = <0x40007c00 0x400>;
+			interrupts = <83>;
+			status = "disabled";
+			clocks = <&rcc UART8_CK>;
+		};
+
 		usart1: serial@40011000 {
 			compatible = "st,stm32h7-uart";
 			reg = <0x40011000 0x400>;