diff --git a/CHANGELOG.md b/CHANGELOG.md
index 927ccd0f..847973d6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+## [v0.2.4] - 2018-10-32
+
+### Fixed
+    - Updated examples and bumped dependancies.
+
 ## [v0.2.3] - 2018-10-06
 
 ### Fixed
@@ -49,7 +54,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 - Initial release
 
-[Unreleased]: https://github.com/mabezdev/stm32l432xx-hal/compare/v0.2.3...HEAD
+[Unreleased]: https://github.com/mabezdev/stm32l432xx-hal/compare/v0.2.4...HEAD
+[v0.2.4]: https://github.com/mabezdev/stm32l432xx-hal/compare/v0.2.3...v0.2.4
 [v0.2.3]: https://github.com/mabezdev/stm32l432xx-hal/compare/v0.2.2...v0.2.3
 [v0.2.2]: https://github.com/mabezdev/stm32l432xx-hal/compare/v0.2.1...v0.2.2
 [v0.2.1]: https://github.com/mabezdev/stm32l432xx-hal/compare/v0.2.0...v0.2.1
diff --git a/Cargo.toml b/Cargo.toml
index cee24abd..6d620639 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "stm32l432xx-hal"
-version = "0.2.3"
+version = "0.2.4"
 authors = ["Scott Mabin <MabezDev@gmail.com>"]
 description = "Hardware abstraction layer for the stm32l432xx chips"
 keywords = ["no-std", "stm32l432xx", "stm32l432kc", "embedded", "embedded-hal"]
@@ -15,7 +15,7 @@ exclude = [
 ]
 
 [dependencies]
-cortex-m = "0.5.2"
+cortex-m = "0.5.7"
 nb = "0.1.1"
 
 [dependencies.cast]
@@ -31,13 +31,13 @@ version = "0.2.1"
 features = ["unproven"]
 
 [dependencies.stm32l4]
-version = "0.2.1"
+version = "0.3.2"
 features = ["stm32l4x2", "rt"]
 
 [dev-dependencies]
-panic-semihosting = "0.3.0"
-cortex-m-semihosting = "0.3.0"
-cortex-m-rt = "0.5.1"
+panic-semihosting = "0.5.0"
+cortex-m-semihosting = "0.3.1"
+cortex-m-rt = "0.6.5"
 
 [profile.dev]
 incremental = false
diff --git a/examples/blinky.rs b/examples/blinky.rs
index 5a1aef78..4fed9a98 100644
--- a/examples/blinky.rs
+++ b/examples/blinky.rs
@@ -23,8 +23,7 @@ use rt::ExceptionFrame;
 use core::fmt::Write;
 use sh::hio;
 
-entry!(main);
-
+#[entry]
 fn main() -> ! {
 
     let mut hstdout = hio::hstdout().unwrap();
@@ -61,14 +60,7 @@ fn main() -> ! {
     }
 }
 
-exception!(HardFault, hard_fault);
-
-fn hard_fault(ef: &ExceptionFrame) -> ! {
+#[exception]
+fn HardFault(ef: &ExceptionFrame) -> ! {
     panic!("{:#?}", ef);
-}
-
-exception!(*, default_handler);
-
-fn default_handler(irqn: i16) {
-    panic!("Unhandled exception (IRQn = {})", irqn);
-}
+}
\ No newline at end of file
diff --git a/examples/pll_config.rs b/examples/pll_config.rs
index bc7e1c76..0a936f81 100644
--- a/examples/pll_config.rs
+++ b/examples/pll_config.rs
@@ -24,8 +24,7 @@ use hal::stm32l4::stm32l4x2;
 use hal::rcc::PllConfig;
 use rt::ExceptionFrame;
 
-entry!(main);
-
+#[entry]
 fn main() -> ! {
     let p = stm32l4x2::Peripherals::take().unwrap();
 
@@ -75,14 +74,7 @@ fn main() -> ! {
     loop {}
 }
 
-exception!(HardFault, hard_fault);
-
-fn hard_fault(ef: &ExceptionFrame) -> ! {
+#[exception]
+fn HardFault(ef: &ExceptionFrame) -> ! {
     panic!("{:#?}", ef);
 }
-
-exception!(*, default_handler);
-
-fn default_handler(irqn: i16) {
-    panic!("Unhandled exception (IRQn = {})", irqn);
-}
diff --git a/examples/rtc.rs b/examples/rtc.rs
index e80ea560..a2ddfe3d 100644
--- a/examples/rtc.rs
+++ b/examples/rtc.rs
@@ -25,8 +25,7 @@ use rt::ExceptionFrame;
 use core::fmt::Write;
 use sh::hio;
 
-entry!(main);
-
+#[entry]
 fn main() -> ! {
 
     let mut hstdout = hio::hstdout().unwrap();
@@ -66,14 +65,7 @@ fn main() -> ! {
     loop {}
 }
 
-exception!(HardFault, hard_fault);
-
-fn hard_fault(ef: &ExceptionFrame) -> ! {
+#[exception]
+fn HardFault(ef: &ExceptionFrame) -> ! {
     panic!("{:#?}", ef);
-}
-
-exception!(*, default_handler);
-
-fn default_handler(irqn: i16) {
-    panic!("Unhandled exception (IRQn = {})", irqn);
-}
+}
\ No newline at end of file
diff --git a/examples/serial.rs b/examples/serial.rs
index bc1c4e8d..1e577c29 100644
--- a/examples/serial.rs
+++ b/examples/serial.rs
@@ -23,8 +23,7 @@ use hal::serial::Serial;
 use hal::stm32l4::stm32l4x2;
 use rt::ExceptionFrame;
 
-entry!(main);
-
+#[entry]
 fn main() -> ! {
     let p = stm32l4x2::Peripherals::take().unwrap();
 
@@ -67,14 +66,7 @@ fn main() -> ! {
     loop {}
 }
 
-exception!(HardFault, hard_fault);
-
-fn hard_fault(ef: &ExceptionFrame) -> ! {
+#[exception]
+fn HardFault(ef: &ExceptionFrame) -> ! {
     panic!("{:#?}", ef);
 }
-
-exception!(*, default_handler);
-
-fn default_handler(irqn: i16) {
-    panic!("Unhandled exception (IRQn = {})", irqn);
-}
diff --git a/examples/serial_dma.rs b/examples/serial_dma.rs
index 8575ffb4..50fd89e8 100644
--- a/examples/serial_dma.rs
+++ b/examples/serial_dma.rs
@@ -25,8 +25,7 @@ use hal::serial::Serial;
 use hal::stm32l4::stm32l4x2;
 use rt::ExceptionFrame;
 
-entry!(main);
-
+#[entry]
 fn main() -> ! {
     let p = stm32l4x2::Peripherals::take().unwrap();
 
@@ -90,14 +89,7 @@ fn main() -> ! {
     loop {}
 }
 
-exception!(HardFault, hard_fault);
-
-fn hard_fault(ef: &ExceptionFrame) -> ! {
+#[exception]
+fn HardFault(ef: &ExceptionFrame) -> ! {
     panic!("{:#?}", ef);
 }
-
-exception!(*, default_handler);
-
-fn default_handler(irqn: i16) {
-    panic!("Unhandled exception (IRQn = {})", irqn);
-}
diff --git a/examples/serial_dma_partial_peek.rs b/examples/serial_dma_partial_peek.rs
index c9b5081b..0f5f1319 100644
--- a/examples/serial_dma_partial_peek.rs
+++ b/examples/serial_dma_partial_peek.rs
@@ -25,8 +25,7 @@ use hal::stm32l4::stm32l4x2;
 use rt::ExceptionFrame;
 use hal::delay::Delay;
 
-entry!(main);
-
+#[entry]
 fn main() -> ! {
     let p = stm32l4x2::Peripherals::take().unwrap();
     let cp = cortex_m::Peripherals::take().unwrap();
@@ -82,14 +81,7 @@ fn main() -> ! {
     loop {}
 }
 
-exception!(HardFault, hard_fault);
-
-fn hard_fault(ef: &ExceptionFrame) -> ! {
+#[exception]
+fn HardFault(ef: &ExceptionFrame) -> ! {
     panic!("{:#?}", ef);
 }
-
-exception!(*, default_handler);
-
-fn default_handler(irqn: i16) {
-    panic!("Unhandled exception (IRQn = {})", irqn);
-}
diff --git a/examples/serial_vcom.rs b/examples/serial_vcom.rs
index ba40dd3a..79d698e8 100644
--- a/examples/serial_vcom.rs
+++ b/examples/serial_vcom.rs
@@ -22,8 +22,7 @@ use hal::serial::Serial;
 use hal::stm32l4::stm32l4x2;
 use rt::ExceptionFrame;
 
-entry!(main);
-
+#[entry]
 fn main() -> ! {
     let p = stm32l4x2::Peripherals::take().unwrap();
 
@@ -71,14 +70,7 @@ fn main() -> ! {
     loop {}
 }
 
-exception!(HardFault, hard_fault);
-
-fn hard_fault(ef: &ExceptionFrame) -> ! {
+#[exception]
+fn HardFault(ef: &ExceptionFrame) -> ! {
     panic!("{:#?}", ef);
 }
-
-exception!(*, default_handler);
-
-fn default_handler(irqn: i16) {
-    panic!("Unhandled exception (IRQn = {})", irqn);
-}
diff --git a/examples/spi_write.rs b/examples/spi_write.rs
index 7bc99eb5..afca0acd 100644
--- a/examples/spi_write.rs
+++ b/examples/spi_write.rs
@@ -24,8 +24,7 @@ pub const MODE: Mode = Mode {
     polarity: Polarity::IdleLow,
 };
 
-entry!(main);
-
+#[entry]
 fn main() -> ! {
     let p = stm32l4x2::Peripherals::take().unwrap();
 
@@ -82,14 +81,7 @@ fn main() -> ! {
     loop {}
 }
 
-exception!(HardFault, hard_fault);
-
-fn hard_fault(ef: &ExceptionFrame) -> ! {
+#[exception]
+fn HardFault(ef: &ExceptionFrame) -> ! {
     panic!("{:#?}", ef);
 }
-
-exception!(*, default_handler);
-
-fn default_handler(irqn: i16) {
-    panic!("Unhandled exception (IRQn = {})", irqn);
-}
diff --git a/examples/touch.rs b/examples/touch.rs
index 8598e699..bc3b36f1 100644
--- a/examples/touch.rs
+++ b/examples/touch.rs
@@ -19,8 +19,7 @@ use hal::stm32l4::stm32l4x2;
 use hal::tsc::Tsc;
 use rt::ExceptionFrame;
 
-entry!(main);
-
+#[entry]
 fn main() -> ! {
     let p = stm32l4x2::Peripherals::take().unwrap();
     // let cp = cortex_m::Peripherals::take().unwrap();
@@ -62,14 +61,7 @@ fn main() -> ! {
     }
 }
 
-exception!(HardFault, hard_fault);
-
-fn hard_fault(ef: &ExceptionFrame) -> ! {
+#[exception]
+fn HardFault(ef: &ExceptionFrame) -> ! {
     panic!("{:#?}", ef);
 }
-
-exception!(*, default_handler);
-
-fn default_handler(irqn: i16) {
-    panic!("Unhandled exception (IRQn = {})", irqn);
-}
diff --git a/src/serial.rs b/src/serial.rs
index ef859cb5..e7aa49ef 100644
--- a/src/serial.rs
+++ b/src/serial.rs
@@ -241,10 +241,10 @@ macro_rules! hal {
                 {
                     {
                         let buffer: &[u8] = &buffer[0];
-                        chan.cmar().write(|w| unsafe {
+                        chan.cmar().write(|w| {
                             w.ma().bits(buffer.as_ptr() as usize as u32)
                         });
-                        chan.cndtr().write(|w| unsafe{
+                        chan.cndtr().write(|w|{
                             w.ndt().bits((buffer.len() * 2) as u16)
                         });
                         chan.cpar().write(|w| unsafe {
@@ -252,7 +252,7 @@ macro_rules! hal {
                         });
 
                         // Tell DMA to request from serial
-                        chan.cselr().write(|w| unsafe {
+                        chan.cselr().write(|w| {
                             w.$dmacsr().bits(0010)
                         });