diff --git a/embassy-stm32/Cargo.toml b/embassy-stm32/Cargo.toml
index 79d764fcc..245b0ffcb 100644
--- a/embassy-stm32/Cargo.toml
+++ b/embassy-stm32/Cargo.toml
@@ -26,6 +26,10 @@ defmt-debug = [ ]
 defmt-info = [ ]
 defmt-warn = [ ]
 defmt-error = [ ]
+_syscfg_f4 = []
+_syscfg_l4 = []
+_usart_v1 = []
+_rng_v1 = []
 
 # BEGIN GENERATED FEATURES
 stm32f401cb = [ "_syscfg_f4", "_usart_v1",]