diff --git a/harrogate/Cargo.lock b/harrogate/Cargo.lock
index 798f906..d122f09 100644
--- a/harrogate/Cargo.lock
+++ b/harrogate/Cargo.lock
@@ -1,149 +1,177 @@
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diff --git a/hello_gradient/Cargo.lock b/hello_gradient/Cargo.lock
index c6cdbb0..9d2bd82 100644
--- a/hello_gradient/Cargo.lock
+++ b/hello_gradient/Cargo.lock
@@ -1,149 +1,177 @@
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 dependencies = [
- "vcell 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "vcell",
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diff --git a/itsybitsy_m0_lights/Cargo.toml b/itsybitsy_m0_lights/Cargo.toml
index 263b783..4c267f1 100644
--- a/itsybitsy_m0_lights/Cargo.toml
+++ b/itsybitsy_m0_lights/Cargo.toml
@@ -6,7 +6,7 @@ edition = "2018"
 
 [dependencies]
 atsamd21g18a = "0.6.0"
-cortex-m = { version = "0.6.1", features = ["inline-asm"] }
+cortex-m = { version = "0.7.1" }
 embedded-hal = "0.2.3"
 itsybitsy_m0 = "0.5.0"
 lights = { path = "../lights" }