diff --git a/pkgs/applications/editors/vscode/extensions/default.nix b/pkgs/applications/editors/vscode/extensions/default.nix
index 38035928a633..abb26fae3d78 100644
--- a/pkgs/applications/editors/vscode/extensions/default.nix
+++ b/pkgs/applications/editors/vscode/extensions/default.nix
@@ -2013,6 +2013,8 @@ let
 
       Google.gemini-cli-vscode-ide-companion = callPackage ./Google.gemini-cli-vscode-ide-companion { };
 
+      gplane.wasm-language-tools = callPackage ./gplane.wasm-language-tools { };
+
       grapecity.gc-excelviewer = buildVscodeMarketplaceExtension {
         mktplcRef = {
           name = "gc-excelviewer";
diff --git a/pkgs/applications/editors/vscode/extensions/gplane.wasm-language-tools/default.nix b/pkgs/applications/editors/vscode/extensions/gplane.wasm-language-tools/default.nix
new file mode 100644
index 000000000000..5fe3da3cabb0
--- /dev/null
+++ b/pkgs/applications/editors/vscode/extensions/gplane.wasm-language-tools/default.nix
@@ -0,0 +1,29 @@
+{
+  lib,
+  vscode-utils,
+  wasm-language-tools,
+}:
+
+vscode-utils.buildVscodeMarketplaceExtension {
+  mktplcRef = {
+    publisher = "gplane";
+    name = "wasm-language-tools";
+    version = "1.16.0";
+    hash = "sha256-H2exVPaF8tYdpXBcooFi5bysp85OLOwxbKrB3HJes0Y=";
+  };
+
+  buildPhase = ''
+    runHook preBuild
+    ln -s ${wasm-language-tools}/bin bin
+    runHook postBuild
+  '';
+
+  meta = {
+    changelog = "https://marketplace.visualstudio.com/items/gplane.wasm-language-tools/changelog";
+    description = "Language support of WebAssembly";
+    downloadPage = "https://marketplace.visualstudio.com/items?itemName=gplane.wasm-language-tools";
+    homepage = "https://github.com/g-plane/vscode-wasm";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ samestep ];
+  };
+}