diff --git a/pkgs/by-name/co/cosmic-bg/package.nix b/pkgs/by-name/co/cosmic-bg/package.nix
index 627247a66e8b..c0f7d3c27d95 100644
--- a/pkgs/by-name/co/cosmic-bg/package.nix
+++ b/pkgs/by-name/co/cosmic-bg/package.nix
@@ -12,17 +12,17 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "cosmic-bg";
-  version = "1.0.0-alpha.2";
+  version = "1.0.0-alpha.5.1";
 
   src = fetchFromGitHub {
     owner = "pop-os";
     repo = pname;
     rev = "epoch-${version}";
-    hash = "sha256-lAFAZBo5FnXgJV3MrZhaYmBxqtH1E7+Huj53ho/hPik=";
+    hash = "sha256-bmcMZIURozlptsR4si62NTmexqaCX1Yj5bYj49GDehQ=";
   };
 
   useFetchCargoVendor = true;
-  cargoHash = "sha256-up3yNsKxTC9YrRuTPsGlCHTp9S/woDXPc5HcYcEY9Xc=";
+  cargoHash = "sha256-GLXooTjcGq4MsBNnlpHBBUJGNs5UjKMQJGJuj9UO2wk=";
 
   postPatch = ''
     substituteInPlace justfile --replace-fail '#!/usr/bin/env' "#!$(command -v env)"