diff --git a/pkgs/development/tools/analysis/panopticon/default.nix b/pkgs/development/tools/analysis/panopticon/default.nix
index 87512355b85..85fd8c93529 100644
--- a/pkgs/development/tools/analysis/panopticon/default.nix
+++ b/pkgs/development/tools/analysis/panopticon/default.nix
@@ -24,10 +24,7 @@ rustPlatform.buildRustPackage rec {
      git
   ];
 
-  # Delete this on next update; see #79975 for details
-  legacyCargoFetcher = true;
-
-  cargoSha256 = "1fsxd7yzb38h1d52yyz7kj1v0riycjydb1b1bn1zkhgwm5sm2kbs";
+  cargoSha256 = "1hdsn011y9invfy7can8c02zwa7birj9y1rxhrj7wyv4gh3659i0";
   doCheck = false;
 
   postInstall = ''