diff --git a/firmware/Cargo.lock b/firmware/Cargo.lock
index ee52a6e..7df116d 100644
--- a/firmware/Cargo.lock
+++ b/firmware/Cargo.lock
@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "atomic-polyfill"
 version = "0.1.2"
@@ -59,9 +61,9 @@ dependencies = [
 
 [[package]]
 name = "cortex-m"
-version = "0.7.2"
+version = "0.7.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "643a210c1bdc23d0db511e2a576082f4ff4dcae9d0c37f50b431b8f8439d6d6b"
+checksum = "8ec610d8f49840a5b376c69663b6369e71f4b34484b9b2eb29fb918d92516cb9"
 dependencies = [
  "bare-metal",
  "bitfield",
diff --git a/firmware/Cargo.toml b/firmware/Cargo.toml
index 3e7db2d..8152df9 100644
--- a/firmware/Cargo.toml
+++ b/firmware/Cargo.toml
@@ -8,7 +8,7 @@ publish = false
 autobins = false
 
 [dependencies]
-cortex-m = "0.7.2"
+cortex-m = "0.7.7"
 cortex-m-rt = "0.6.13"
 micromath = "2.0.0"
 panic-rtt-target = { version = "0.1.2", features = ["cortex-m"] }