diff --git a/bluepill-rs/Cargo.lock b/bluepill-rs/Cargo.lock
index 1e37b98..58f66bb 100644
--- a/bluepill-rs/Cargo.lock
+++ b/bluepill-rs/Cargo.lock
@@ -57,7 +57,6 @@ dependencies = [
  "nb 1.1.0",
  "panic-halt",
  "panic-semihosting",
- "stm32f1",
  "stm32f1xx-hal",
  "systick-monotonic",
 ]
diff --git a/bluepill-rs/Cargo.toml b/bluepill-rs/Cargo.toml
index 5e5d683..022b9d2 100644
--- a/bluepill-rs/Cargo.toml
+++ b/bluepill-rs/Cargo.toml
@@ -8,7 +8,6 @@ edition = "2021"
 [dependencies]
 # main deps
 embedded-hal = "1.0.0"
-stm32f1 = { version = "0.15", features = ["stm32f103", "rt"] }
 stm32f1xx-hal = { version = "0.10.0", features = ["rt", "stm32f103", "medium"] }
 nb = "1"
 cortex-m = { version = "0.7.6", features = ["critical-section-single-core"] }
diff --git a/bluepill-rs/src/main.rs b/bluepill-rs/src/main.rs
index 874f987..333c3db 100644
--- a/bluepill-rs/src/main.rs
+++ b/bluepill-rs/src/main.rs
@@ -8,7 +8,7 @@ mod i2c_slave;
 // extern crate panic_halt;
 extern crate panic_semihosting;
 
-#[rtic::app(device = stm32f1::stm32f103, peripherals = true)]
+#[rtic::app(device = stm32f1xx_hal::pac)]
 mod app {
     use cortex_m::singleton;
     use stm32f1xx_hal::{dma, gpio, pac, prelude::*, serial, timer};