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 705dec13f076..66aa1d259dd0 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-khsOlVP9RyC4wYQjl+q0wEhBoPelbhchKwa1wie8Jl4=";
+    hash = "sha256-6aR9A2hZMtIIiaJinWUSyJBGAt4Dd9C+r70K6W4K3DA";
   };
 
   nativeBuildInputs = [
diff --git a/pkgs/by-name/ha/harper/package.nix b/pkgs/by-name/ha/harper/package.nix
index 14a142d8bbd8..3fa21cf23e15 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 = "1.3.0";
+  version = "1.4.0";
 
   src = fetchFromGitHub {
     owner = "Automattic";
     repo = "harper";
     rev = "v${finalAttrs.version}";
-    hash = "sha256-AXBRCQpa2cmdmVeABZb9hXNWH7gJgqfrqot16fTgJrY=";
+    hash = "sha256-JHefzppRB8OmnSH0zAUZTFyBt8sgam4QBfAoZRurYYg=";
   };
 
   buildAndTestSubdir = "harper-ls";
 
-  cargoHash = "sha256-LqjdH6qKpcMBy8Pqks4nmvej3wbT5EvIISxp9ULgqs4=";
+  cargoHash = "sha256-XjE+CXJ25/VfDhkElv+fNDgjBJ2rLeFpnUC/DG8hXAk=";
 
   passthru.updateScript = nix-update-script { };