diff --git a/pkgs/by-name/ff/ff2mpv-rust/Cargo.lock b/pkgs/by-name/ff/ff2mpv-rust/Cargo.lock
deleted file mode 100644
index 1a9b1c524d6e..000000000000
--- a/pkgs/by-name/ff/ff2mpv-rust/Cargo.lock
+++ /dev/null
@@ -1,112 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-version = 3
-
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-
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- "serde",
- "serde_json",
-]
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diff --git a/pkgs/by-name/ff/ff2mpv-rust/package.nix b/pkgs/by-name/ff/ff2mpv-rust/package.nix
index 08c11e8d0bca..8114704b982c 100644
--- a/pkgs/by-name/ff/ff2mpv-rust/package.nix
+++ b/pkgs/by-name/ff/ff2mpv-rust/package.nix
@@ -32,9 +32,7 @@ rustPlatform.buildRustPackage rec {
     hash = "sha256-gk3MqoMCau6RTlttTLqFtlXhrYMOf89YFg8aAlh++9s=";
   };
 
-  cargoLock = {
-    lockFile = ./Cargo.lock;
-  };
+  cargoHash = "sha256-NjzqzfueqR1MNR23lRYj7IYIa+OHzVhpuAo18avKMUk=";
 
   postInstall = ''
     $out/bin/ff2mpv-rust manifest > manifest.json