diff --git a/ld/devices.data b/ld/devices.data
index 1d9122ab..8a790d7b 100644
--- a/ld/devices.data
+++ b/ld/devices.data
@@ -79,6 +79,8 @@ stm32f051?8* stm32f0 ROM=64K RAM=8K
 stm32f070?6* stm32f0 ROM=32K RAM=6K
 stm32f072?8* stm32f0 ROM=64K RAM=16K
 stm32f07[012]?b* stm32f0 ROM=128K RAM=16K
+stm32f091?b* stm32f0 ROM=128K RAM=32K
+stm32f091?c* stm32f0 ROM=256K RAM=32K
 
 stm32f10[012]?4* stm32f1 ROM=16K RAM=4K
 stm32f103?4* stm32f1 ROM=16K RAM=6K