diff --git a/purism/librem/5r4/u-boot/default.nix b/purism/librem/5r4/u-boot/default.nix
index 43dcee43..9cb4d4c4 100644
--- a/purism/librem/5r4/u-boot/default.nix
+++ b/purism/librem/5r4/u-boot/default.nix
@@ -1,6 +1,5 @@
 {
   stdenv,
-  gcc11Stdenv,
   buildUBoot,
   fetchurl,
   fetchFromGitLab,
@@ -28,7 +27,7 @@ let
     meta.license = lib.licenses.unfree;
   });
 
-  arm-trusted-firmware-imx8mq = gcc11Stdenv.mkDerivation (_fa: {
+  arm-trusted-firmware-imx8mq = stdenv.mkDerivation (_fa: {
     pname = "arm-trusted-firmware-bl31";
     version = "unstable-2020-07-08";
     src = fetchFromGitLab {
@@ -40,6 +39,7 @@ let
     };
     enableParallelBuilding = true;
     hardeningDisable = [ "all" ];
+    NIX_CFLAGS_COMPILE = "-Wno-error=array-bounds";
     NIX_LDFLAGS = "--no-warn-rwx-segments";
     buildFlags = [
       "PLAT=imx8mq"
@@ -53,14 +53,14 @@ let
   });
 
   ubootLibrem5 = buildUBoot {
-    version = "unstable-2022-12-15";
+    version = "unstable-2025-03-25";
     defconfig = "librem5_defconfig";
     src = fetchFromGitLab {
       domain = "source.puri.sm";
       owner = "Librem5";
       repo = "uboot-imx";
-      rev = "956aa590c93977992743b41c45d3c7ee5a024915"; # this is the latest commit on the upstream/librem5 branch
-      hash = "sha256-MsIIlarN+WFFEzc0ptLAgS7BwJ6Cosy42xo0EwPn1AU=";
+      rev = "72fcd4ee36e0874daac734c1195263cd9ce9d981"; # this is the latest commit on the upstream/librem5 branch
+      hash = "sha256-ymqZPuyyZoFTaCMQIJnuNs1fV0uVwJhyQdnGwv9m9lE=";
     };
     patches = [ ];
     BL31 = "${arm-trusted-firmware-imx8mq}/bl31.bin";