diff --git a/flake.nix b/flake.nix
index 5abaa3b..c0984bf 100644
--- a/flake.nix
+++ b/flake.nix
@@ -35,6 +35,7 @@
         hyprpaper = final.callPackage ./nix/default.nix {
           stdenv = final.gcc13Stdenv;
           version = "0.pre" + "+date=" + (mkDate (self.lastModifiedDate or "19700101")) + "_" + (self.shortRev or "dirty");
+          commit = self.rev or "";
           inherit (final.xorg) libXdmcp;
           inherit (inputs.hyprlang.packages.${final.system}) hyprlang;
         };
diff --git a/nix/default.nix b/nix/default.nix
index ab24856..32b0eee 100644
--- a/nix/default.nix
+++ b/nix/default.nix
@@ -23,6 +23,7 @@
   wayland-protocols,
   wayland-scanner,
   libXdmcp,
+  commit,
   debug ? false,
   version ? "git",
 }:
@@ -32,6 +33,11 @@ stdenv.mkDerivation {
 
   src = ../.;
 
+  prePatch = ''
+    substituteInPlace src/main.cpp \
+      --replace GIT_COMMIT_HASH '"${commit}"'
+  '';
+
   cmakeBuildType =
     if debug
     then "Debug"