diff --git a/client/src/extension.ts b/client/src/extension.ts
index af148c23..4cf455ed 100644
--- a/client/src/extension.ts
+++ b/client/src/extension.ts
@@ -93,6 +93,7 @@ export async function activate(
       { scheme: "file", language: "css" },
       { scheme: "file", language: "yaml" },
       { scheme: "file", language: "sql" },
+      { scheme: "file", language: "svelte" },
       { scheme: "file", language: "vue" },
       { scheme: "file", language: "astro" },
       { scheme: "file", language: "vento" },
@@ -108,6 +109,7 @@ export async function activate(
       { scheme: "untitled", language: "css" },
       { scheme: "untitled", language: "yaml" },
       { scheme: "untitled", language: "sql" },
+      { scheme: "untitled", language: "svelte" },
       { scheme: "untitled", language: "vue" },
       { scheme: "untitled", language: "astro" },
       { scheme: "untitled", language: "vento" },
@@ -123,6 +125,7 @@ export async function activate(
       { scheme: "deno", language: "css" },
       { scheme: "deno", language: "yaml" },
       { scheme: "deno", language: "sql" },
+      { scheme: "deno", language: "svelte" },
       { scheme: "deno", language: "vue" },
       { scheme: "deno", language: "astro" },
       { scheme: "deno", language: "vento" },