diff --git a/pkgs/applications/editors/vscode/extensions/elijah-potter.harper/default.nix b/pkgs/applications/editors/vscode/extensions/elijah-potter.harper/default.nix
index 171d6038515f..a744b9c40bc7 100644
--- a/pkgs/applications/editors/vscode/extensions/elijah-potter.harper/default.nix
+++ b/pkgs/applications/editors/vscode/extensions/elijah-potter.harper/default.nix
@@ -13,7 +13,7 @@ vscode-utils.buildVscodeMarketplaceExtension {
     name = "harper";
     publisher = "elijah-potter";
     version = harper.version;
-    hash = "sha256-ldXQKAJX8YQVjtGjKRom14fNuA6ZwDwpPusbjS+4G+I=";
+    hash = "sha256-Mu1l/3twbdpqIV8ePNfR7No23Ib/8hkB2CfE59BZP9M=";
   };
 
   nativeBuildInputs = [
diff --git a/pkgs/by-name/ha/harper/package.nix b/pkgs/by-name/ha/harper/package.nix
index 037379706c85..9a3b8247e90e 100644
--- a/pkgs/by-name/ha/harper/package.nix
+++ b/pkgs/by-name/ha/harper/package.nix
@@ -8,18 +8,18 @@
 
 rustPlatform.buildRustPackage (finalAttrs: {
   pname = "harper";
-  version = "0.71.0";
+  version = "1.0.0";
 
   src = fetchFromGitHub {
     owner = "Automattic";
     repo = "harper";
     rev = "v${finalAttrs.version}";
-    hash = "sha256-Hf086Ub0nVGET4qELDMddOErGAhK8B6ohbI5JhnU6z8=";
+    hash = "sha256-U0k6DODMW9OK+sR9kt8JzpmV32d9py9Pehv/0h8SqDg=";
   };
 
   buildAndTestSubdir = "harper-ls";
 
-  cargoHash = "sha256-hS8fLWD3OTfEAa+4saeB9pK3zS/EQSnoQSUGIkVWocw=";
+  cargoHash = "sha256-TyqUKAlrcoqsDBS2Y3jzUFNNRazSBsCf6una0znc+yw=";
 
   passthru.updateScript = nix-update-script { };