diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8500386..1707cb9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,7 @@
 cmake_minimum_required(VERSION 3.19)
 
-set(VERSION 0.4.0)
+file(READ "${CMAKE_SOURCE_DIR}/VERSION" VER_RAW)
+string(STRIP ${VER_RAW} VERSION)
 
 project(hyprlock
     DESCRIPTION "A gpu-accelerated screen lock for Hyprland"
diff --git a/VERSION b/VERSION
new file mode 100644
index 0000000..1d0ba9e
--- /dev/null
+++ b/VERSION
@@ -0,0 +1 @@
+0.4.0
diff --git a/nix/overlays.nix b/nix/overlays.nix
index 414b1ae..d4ec360 100644
--- a/nix/overlays.nix
+++ b/nix/overlays.nix
@@ -7,6 +7,8 @@
     (builtins.substring 4 2 longDate)
     (builtins.substring 6 2 longDate)
   ]);
+
+  version = lib.removeSuffix "\n" (builtins.readFile ../VERSION);
 in {
   default = inputs.self.overlays.hyprlock;
 
@@ -16,7 +18,7 @@ in {
     (final: prev: {
       hyprlock = prev.callPackage ./default.nix {
         stdenv = prev.gcc13Stdenv;
-        version = "0.pre" + "+date=" + (mkDate (inputs.self.lastModifiedDate or "19700101")) + "_" + (inputs.self.shortRev or "dirty");
+        version = version + "+date=" + (mkDate (inputs.self.lastModifiedDate or "19700101")) + "_" + (inputs.self.shortRev or "dirty");
         inherit (final) hyprlang;
       };
     })