diff --git a/include/libopencm3/stm32/l0/gpio.h b/include/libopencm3/stm32/l0/gpio.h
index da2f420d..785116ae 100644
--- a/include/libopencm3/stm32/l0/gpio.h
+++ b/include/libopencm3/stm32/l0/gpio.h
@@ -46,6 +46,7 @@
 #define GPIOB_BRR			GPIO_BRR(GPIOB)
 #define GPIOC_BRR			GPIO_BRR(GPIOC)
 #define GPIOD_BRR			GPIO_BRR(GPIOD)
+#define GPIOE_BRR			GPIO_BRR(GPIOE)
 #define GPIOH_BRR			GPIO_BRR(GPIOH)
 
 /*****************************************************************************/
diff --git a/include/libopencm3/stm32/l0/memorymap.h b/include/libopencm3/stm32/l0/memorymap.h
index 1bde26eb..e9a775bf 100644
--- a/include/libopencm3/stm32/l0/memorymap.h
+++ b/include/libopencm3/stm32/l0/memorymap.h
@@ -45,6 +45,8 @@
 #define SPI2_BASE			(PERIPH_BASE_APB1 + 0x3800)
 #define USART2_BASE			(PERIPH_BASE_APB1 + 0x4400)
 #define LPUART1_BASE			(PERIPH_BASE_APB1 + 0x4800)
+#define USART4_BASE			(PERIPH_BASE_APB1 + 0x4c00)
+#define USART5_BASE			(PERIPH_BASE_APB1 + 0x5000)
 #define I2C1_BASE			(PERIPH_BASE_APB1 + 0x5400)
 #define I2C2_BASE			(PERIPH_BASE_APB1 + 0x5800)
 #define USB_DEV_FS_BASE			(PERIPH_BASE_APB1 + 0x5c00)
@@ -80,6 +82,7 @@
 #define GPIO_PORT_B_BASE		(IOPORT_BASE + 0x00400)
 #define GPIO_PORT_C_BASE		(IOPORT_BASE + 0x00800)
 #define GPIO_PORT_D_BASE		(IOPORT_BASE + 0x00c00)
+#define GPIO_PORT_E_BASE		(IOPORT_BASE + 0x01000)
 #define GPIO_PORT_H_BASE		(IOPORT_BASE + 0x01C00)
 
 /* Device Electronic Signature */