diff --git a/Cargo.toml b/Cargo.toml
index c62c914..5b34dc1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,7 +26,7 @@ features = []
 default-target = "thumbv7em-none-eabihf"
 
 [dependencies]
-cortex-m = { version = "0.6", features = ["const-fn"] }
+cortex-m = { version = "0.6", features = ["const-fn", "cm7-r0p1"] }
 cortex-m-rt = { version = "0.6", features = ["device"] }
 cortex-m-log = { version = "0.6", features = ["log-integration"] }
 log = "0.4"