diff --git a/pkgs/by-name/ud/udevil/fix-gcc15.patch b/pkgs/by-name/ud/udevil/fix-gcc15.patch
new file mode 100644
index 000000000000..76079228aca0
--- /dev/null
+++ b/pkgs/by-name/ud/udevil/fix-gcc15.patch
@@ -0,0 +1,22 @@
+diff --git a/src/udevil.c b/src/udevil.c
+index bab80e9..f9e5388 100644
+--- a/src/udevil.c
++++ b/src/udevil.c
+@@ -4795,7 +4795,7 @@ static int command_info( CommandData* data )
+     return ret;
+ }
+ 
+-void command_monitor_finalize()
++void command_monitor_finalize(int _a)
+ {
+     //if (signal == SIGINT || signal == SIGTERM)
+     //printf( "\nudevil: SIGINT || SIGTERM\n");
+@@ -4913,7 +4913,7 @@ finish_:
+     return 1;
+ }
+ 
+-void command_interrupt()
++void command_interrupt(int _a)
+ {
+     if ( udev )
+     {
diff --git a/pkgs/by-name/ud/udevil/package.nix b/pkgs/by-name/ud/udevil/package.nix
index 7b4bc1706682..a84279c1f2a5 100644
--- a/pkgs/by-name/ud/udevil/package.nix
+++ b/pkgs/by-name/ud/udevil/package.nix
@@ -17,8 +17,8 @@ stdenv.mkDerivation rec {
   src = fetchFromGitHub {
     owner = "IgnorantGuru";
     repo = "udevil";
-    rev = version;
-    sha256 = "0nd44r8rbxifx4x4m24z5aji1c6k1fhw8cmf5s43wd5qys0bcdad";
+    tag = version;
+    hash = "sha256-TTW2gPa4ND6ILq4yxKEL07AQpSqfiEo66S72lVEmpFk=";
   };
 
   nativeBuildInputs = [
@@ -53,6 +53,8 @@ stdenv.mkDerivation rec {
   patches = [
     # sys/stat.h header missing on src/device-info.h
     ./device-info-sys-stat.patch
+
+    ./fix-gcc15.patch
   ];
 
   meta = {