diff --git a/Cargo.lock b/Cargo.lock
index 811320948..238a38a4c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -109,9 +109,9 @@ dependencies = [
 
 [[package]]
 name = "bytemuck"
-version = "1.20.0"
+version = "1.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8b37c88a63ffd85d15b406896cc343916d7cf57838a847b3a6f2ca5d39a5695a"
+checksum = "ef657dfab802224e671f5818e9a4935f9b1957ed18e58292690cc39e7a4092a3"
 
 [[package]]
 name = "byteorder"
diff --git a/ad9959/Cargo.toml b/ad9959/Cargo.toml
index 701b7a6ff..25a1d88c0 100644
--- a/ad9959/Cargo.toml
+++ b/ad9959/Cargo.toml
@@ -12,5 +12,5 @@ documentation = "https://docs.rs/ad9959/"
 [dependencies]
 embedded-hal = {version = "0.2.7", features = ["unproven"]}
 bit_field = "0.10.2"
-bytemuck = "1.20.0"
+bytemuck = "1.21.0"
 bitflags = "2.6.0"