diff --git a/dts/arm/st/f1/stm32f103Xe.dtsi b/dts/arm/st/f1/stm32f103Xe.dtsi
index 5fd6efdc218..fc930a33e30 100644
--- a/dts/arm/st/f1/stm32f103Xe.dtsi
+++ b/dts/arm/st/f1/stm32f103Xe.dtsi
@@ -29,6 +29,15 @@
 			label = "UART_4";
 		};
 
+		uart5: serial@40005000 {
+			compatible = "st,stm32-uart";
+			reg = <0x40005000 0x400>;
+			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00100000>;
+			interrupts = <53 0>;
+			status = "disabled";
+			label = "UART_5";
+		};
+
 		timers5: timers@40000c00 {
 			compatible = "st,stm32-timers";
 			reg = <0x40000c00 0x400>;
diff --git a/dts/arm/st/f1/stm32f107.dtsi b/dts/arm/st/f1/stm32f107.dtsi
index 923290cf23a..319bcb10e38 100644
--- a/dts/arm/st/f1/stm32f107.dtsi
+++ b/dts/arm/st/f1/stm32f107.dtsi
@@ -17,6 +17,15 @@
 			label = "UART_4";
 		};
 
+		uart5: serial@40005000 {
+			compatible = "st,stm32-uart";
+			reg = <0x40005000 0x400>;
+			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00100000>;
+			interrupts = <53 0>;
+			status = "disabled";
+			label = "UART_5";
+		};
+
 		timers5: timers@40000c00 {
 			compatible = "st,stm32-timers";
 			reg = <0x40000c00 0x400>;
diff --git a/soc/arm/st_stm32/stm32f1/dts_fixup.h b/soc/arm/st_stm32/stm32f1/dts_fixup.h
index bda101d96a2..43699e35c0a 100644
--- a/soc/arm/st_stm32/stm32f1/dts_fixup.h
+++ b/soc/arm/st_stm32/stm32f1/dts_fixup.h
@@ -97,6 +97,14 @@
 #define DT_UART_STM32_UART_4_CLOCK_BITS     DT_ST_STM32_UART_40004C00_CLOCK_BITS
 #define DT_UART_STM32_UART_4_CLOCK_BUS	DT_ST_STM32_UART_40004C00_CLOCK_BUS
 
+#define DT_UART_STM32_UART_5_BASE_ADDRESS   DT_ST_STM32_UART_40005000_BASE_ADDRESS
+#define DT_UART_STM32_UART_5_BAUD_RATE      DT_ST_STM32_UART_40005000_CURRENT_SPEED
+#define DT_UART_STM32_UART_5_IRQ_PRI        DT_ST_STM32_UART_40005000_IRQ_0_PRIORITY
+#define DT_UART_STM32_UART_5_NAME           DT_ST_STM32_UART_40005000_LABEL
+#define DT_UART_5_IRQ                              DT_ST_STM32_UART_40005000_IRQ_0
+#define DT_UART_STM32_UART_5_CLOCK_BITS     DT_ST_STM32_UART_40005000_CLOCK_BITS
+#define DT_UART_STM32_UART_5_CLOCK_BUS	DT_ST_STM32_UART_40005000_CLOCK_BUS
+
 #define DT_I2C_1_BASE_ADDRESS               DT_ST_STM32_I2C_V1_40005400_BASE_ADDRESS
 #define DT_I2C_1_EVENT_IRQ_PRI              DT_ST_STM32_I2C_V1_40005400_IRQ_EVENT_PRIORITY
 #define DT_I2C_1_ERROR_IRQ_PRI              DT_ST_STM32_I2C_V1_40005400_IRQ_ERROR_PRIORITY