diff --git a/default.nix b/default.nix
index 861d093d..d2723677 100644
--- a/default.nix
+++ b/default.nix
@@ -20,7 +20,7 @@ let
       name = "firmware";
 
       src = ./src;
-      cargoSha256 = "1f7an19imbszrcl4mw9v1c11pprfdz3jy8cw2r0gc4bmfbnn6lcg";
+      cargoSha256 = "0c758a9q07ba3vr8iqiibywpg8b5dajbhjlgykanzzsr11nrkc5r";
 
       nativeBuildInputs = [
         pkgs.gnumake
diff --git a/src/Cargo.lock b/src/Cargo.lock
index 15e56648..c9429df5 100644
--- a/src/Cargo.lock
+++ b/src/Cargo.lock
@@ -195,7 +195,7 @@ dependencies = [
 [[package]]
 name = "libasync"
 version = "0.0.0"
-source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#040d41fd76499f6991634ce5fb63bef879c3c694"
+source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#c7e9f85de2b204d6889c1c44b8ef4e587d0eb6a9"
 dependencies = [
  "embedded-hal",
  "libcortex_a9",
@@ -207,7 +207,7 @@ dependencies = [
 [[package]]
 name = "libboard_zynq"
 version = "0.0.0"
-source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#040d41fd76499f6991634ce5fb63bef879c3c694"
+source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#c7e9f85de2b204d6889c1c44b8ef4e587d0eb6a9"
 dependencies = [
  "bit_field",
  "embedded-hal",
@@ -232,7 +232,7 @@ dependencies = [
 [[package]]
 name = "libconfig"
 version = "0.1.0"
-source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#040d41fd76499f6991634ce5fb63bef879c3c694"
+source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#c7e9f85de2b204d6889c1c44b8ef4e587d0eb6a9"
 dependencies = [
  "core_io",
  "fatfs",
@@ -243,7 +243,7 @@ dependencies = [
 [[package]]
 name = "libcortex_a9"
 version = "0.0.0"
-source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#040d41fd76499f6991634ce5fb63bef879c3c694"
+source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#c7e9f85de2b204d6889c1c44b8ef4e587d0eb6a9"
 dependencies = [
  "bit_field",
  "libregister",
@@ -259,7 +259,7 @@ checksum = "c7d73b3f436185384286bd8098d17ec07c9a7d2388a6599f824d8502b529702a"
 [[package]]
 name = "libregister"
 version = "0.0.0"
-source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#040d41fd76499f6991634ce5fb63bef879c3c694"
+source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#c7e9f85de2b204d6889c1c44b8ef4e587d0eb6a9"
 dependencies = [
  "bit_field",
  "vcell",
@@ -269,7 +269,7 @@ dependencies = [
 [[package]]
 name = "libsupport_zynq"
 version = "0.0.0"
-source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#040d41fd76499f6991634ce5fb63bef879c3c694"
+source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#c7e9f85de2b204d6889c1c44b8ef4e587d0eb6a9"
 dependencies = [
  "cc",
  "compiler_builtins",
diff --git a/zynq-rs.nix b/zynq-rs.nix
index b741ce51..f6c8db1a 100644
--- a/zynq-rs.nix
+++ b/zynq-rs.nix
@@ -3,6 +3,6 @@ let
 in
   pkgs.fetchgit {
     url = "https://git.m-labs.hk/M-Labs/zynq-rs.git";
-    rev = "040d41fd76499f6991634ce5fb63bef879c3c694";
-    sha256 = "03ym7aj6kys54vr54hff1460zrq9qqafzzr8g12wy9la0mnmr1wi";
+    rev = "c7e9f85de2b204d6889c1c44b8ef4e587d0eb6a9";
+    sha256 = "1zxbdi01cbxcbfb3in3bcyhrwwsnyqgb8nzwzsqnn8sw16cjkfxv";
   }