diff --git a/default.nix b/default.nix
index c61d874..aaacca6 100644
--- a/default.nix
+++ b/default.nix
@@ -15,7 +15,7 @@ let
       version = "0.1.0";
 
       src = ./src;
-      cargoSha256 = "0b1jq06bm25djp7ppharkzvlxxbcqaq08756j0d0x8n0s2jwi4fn";
+      cargoSha256 = "0fpnwiqwscd8v48hpjzy0ydmiv3kl68lbl9j06nkybs9flj1r08a";
 
       nativeBuildInputs = [
         pkgs.gnumake
diff --git a/src/Cargo.lock b/src/Cargo.lock
index d5c61c7..d0ce307 100644
--- a/src/Cargo.lock
+++ b/src/Cargo.lock
@@ -187,7 +187,7 @@ dependencies = [
 [[package]]
 name = "libasync"
 version = "0.0.0"
-source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#02c67051e8c4d3022261fd3bf7b9c695e9fc0e3a"
+source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#4fef8a71929b989e1189736628ab9c186f23f3a5"
 dependencies = [
  "embedded-hal",
  "libcortex_a9",
@@ -199,7 +199,7 @@ dependencies = [
 [[package]]
 name = "libboard_zynq"
 version = "0.0.0"
-source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#02c67051e8c4d3022261fd3bf7b9c695e9fc0e3a"
+source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#4fef8a71929b989e1189736628ab9c186f23f3a5"
 dependencies = [
  "bit_field",
  "embedded-hal",
@@ -233,7 +233,7 @@ dependencies = [
 [[package]]
 name = "libcortex_a9"
 version = "0.0.0"
-source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#02c67051e8c4d3022261fd3bf7b9c695e9fc0e3a"
+source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#4fef8a71929b989e1189736628ab9c186f23f3a5"
 dependencies = [
  "bit_field",
  "libregister",
@@ -249,7 +249,7 @@ checksum = "c7d73b3f436185384286bd8098d17ec07c9a7d2388a6599f824d8502b529702a"
 [[package]]
 name = "libregister"
 version = "0.0.0"
-source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#02c67051e8c4d3022261fd3bf7b9c695e9fc0e3a"
+source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#4fef8a71929b989e1189736628ab9c186f23f3a5"
 dependencies = [
  "bit_field",
  "vcell",
@@ -259,7 +259,7 @@ dependencies = [
 [[package]]
 name = "libsupport_zynq"
 version = "0.0.0"
-source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#02c67051e8c4d3022261fd3bf7b9c695e9fc0e3a"
+source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#4fef8a71929b989e1189736628ab9c186f23f3a5"
 dependencies = [
  "compiler_builtins",
  "libboard_zynq",