diff --git a/pkgs/by-name/co/cosmic-workspaces-epoch/package.nix b/pkgs/by-name/co/cosmic-workspaces-epoch/package.nix
index e487328a1f2f..d750cff7e77f 100644
--- a/pkgs/by-name/co/cosmic-workspaces-epoch/package.nix
+++ b/pkgs/by-name/co/cosmic-workspaces-epoch/package.nix
@@ -13,17 +13,17 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "cosmic-workspaces-epoch";
-  version = "1.0.0-alpha.2";
+  version = "1.0.0-alpha.5.1";
 
   src = fetchFromGitHub {
     owner = "pop-os";
     repo = "cosmic-workspaces-epoch";
     rev = "epoch-${version}";
-    hash = "sha256-z3xQ6Vgqkm8hYLo2550NbFRkTMRQ0F9zn85iobnykH5=";
+    hash = "sha256-lAK7DZWwNMr30u6Uopew9O/6FIG6e2SgcdA+cD/K5Ok=";
   };
 
   useFetchCargoVendor = true;
-  cargoHash = "sha256-QRBgFTXPWQ0RCSfCA2WpBs+vKTFD7Xfz60cIDtbYb5Y=";
+  cargoHash = "sha256-w1lQdzy2mJ5NfqngvOLqFCxyhWgvIySDDXCCtCCtTjg=";
 
   separateDebugInfo = true;