diff --git a/Cargo.toml b/Cargo.toml
index c8fba80..361c58f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,7 +11,7 @@ embedded-hal = "1.0"
 usb-device = "0.3.2"
 
 [dependencies.avr-device]
-version = "0.5.4"
+version = "0.8.1"
 features = ["atmega32u4"]
 
 # The latest releases of `proc-macro2` do not support the rust toolchain that