diff --git a/pkgs/by-name/po/pop-wallpapers/package.nix b/pkgs/by-name/po/pop-wallpapers/package.nix
index 86006fd80d92..fc64a66c6ca6 100644
--- a/pkgs/by-name/po/pop-wallpapers/package.nix
+++ b/pkgs/by-name/po/pop-wallpapers/package.nix
@@ -8,21 +8,18 @@
 
 stdenvNoCC.mkDerivation (finalAttrs: {
   pname = "pop-wallpapers";
-  version = "1.0.5";
+  version = "1.0.5-unstable-2025-06-24";
 
   src = fetchFromGitHub {
     owner = "pop-os";
     repo = "wallpapers";
-    rev = "refs/tags/${finalAttrs.version}";
-    hash = "sha256-JST5Rt4Ec1lRu62PUt98S2G1vKthAyOSpyCpuCnkGmw=";
+    rev = "20a9fdd1ed86aadfbbfcd55dc3d2d9eb8ae28e15";
+    hash = "sha256-GUXxy+zRdBCsvWW9ytJZUHSw6rGc3uNTjNIsiK3l+zA=";
   };
 
-  # 1. Future-proofs calls to imagemagick's convert feature
-  # 2. Replace hard-coded /usr path to build-system `datadir`
+  # Future-proofs calls to imagemagick's convert feature
   postPatch = ''
-    substituteInPlace Makefile \
-        --replace-fail "convert" "magick" \
-        --replace-fail "/usr/share" "\$(datadir)"
+    substituteInPlace Makefile --replace-fail "convert" "magick"
   '';
 
   nativeBuildInputs = [ imagemagick ];
@@ -31,7 +28,7 @@ stdenvNoCC.mkDerivation (finalAttrs: {
 
   enableParallelBuilding = true;
 
-  passthru.updateScript = nix-update-script { };
+  passthru.updateScript = nix-update-script { extraArgs = [ "--version=branch" ]; };
 
   meta = {
     description = "Wallpapers for Pop!_OS";