diff --git a/biome.json b/biome.json
index da969039..668a9fc6 100644
--- a/biome.json
+++ b/biome.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://biomejs.dev/schemas/1.5.0/schema.json",
+  "$schema": "https://biomejs.dev/schemas/1.6.0/schema.json",
   "organizeImports": {
     "enabled": true
   },
@@ -15,7 +15,9 @@
       "nursery": {
         "all": true,
         "useImportRestrictions": "off",
-        "useFilenamingConvention": "off"
+        "useJsxKeyInIterable": "off",
+        "useSortedClasses": "off",
+        "noConsole": "off"
       },
       "style": {
         "noImplicitBoolean": "off",
diff --git a/deno.json b/deno.json
index 90b32226..2166fde2 100644
--- a/deno.json
+++ b/deno.json
@@ -17,7 +17,7 @@
     "esm:add": "deno task esm add",
     "esm:update": "deno task esm update",
     "esm:remove": "deno task esm remove",
-    "biome": "deno run -A npm:@biomejs/biome@1.5.3",
+    "biome": "deno run -A npm:@biomejs/biome@1.6.0",
     "biome:ci": "deno task biome ci . --error-on-warnings",
     "biome:check": "deno task biome check . --error-on-warnings",
     "compile:mdx": "deno run -A tool/compile-mdx.ts",
diff --git a/src/routes/solutions/[category]/[[slug]].tsx b/src/routes/solutions/[category]/[[slug]].tsx
index e5d56934..9e2e7ba8 100644
--- a/src/routes/solutions/[category]/[[slug]].tsx
+++ b/src/routes/solutions/[category]/[[slug]].tsx
@@ -32,7 +32,7 @@ export const handler: Handlers<SolutionProps> = {
     try {
       const { category, slug } = ctx.params;
       if (category === undefined) {
-        return ctx.renderNotFound();
+        return await ctx.renderNotFound();
       }
 
       const base = join(contentDir, category);
@@ -41,7 +41,7 @@ export const handler: Handlers<SolutionProps> = {
 
       const file: MdxFile = await import(filepath);
 
-      return ctx.render({ page: file });
+      return await ctx.render({ page: file });
     } catch (e) {
       console.error(e);
 
diff --git a/src/routes/solutions/[category]/index.tsx b/src/routes/solutions/[category]/index.tsx
index 05d9ff8c..f106b0b7 100644
--- a/src/routes/solutions/[category]/index.tsx
+++ b/src/routes/solutions/[category]/index.tsx
@@ -33,14 +33,14 @@ const categoryProps = z.object({
  * The server handler for the solution page.
  */
 export const handler: Handlers<CategoryProps> = {
-  GET(
+  async GET(
     _req: Request,
     ctx: FreshContextHelper<CategoryProps>,
-  ): Response | Promise<Response> {
+  ): Promise<Response> {
     try {
       const { category } = ctx.params;
       if (category === undefined || !isKey(categoryMetadata, category)) {
-        return ctx.renderNotFound();
+        return await ctx.renderNotFound();
       }
 
       let data: CategoryData[] = [];
@@ -62,7 +62,7 @@ export const handler: Handlers<CategoryProps> = {
         }
       }
 
-      return ctx.render({
+      return await ctx.render({
         pages: categoryPropsPages.parse(data),
         title: categoryMetadata[category].title,
         description: categoryMetadata[category].description,
@@ -70,7 +70,7 @@ export const handler: Handlers<CategoryProps> = {
     } catch (e) {
       console.error(e);
 
-      return ctx.renderNotFound();
+      return await ctx.renderNotFound();
     }
   },
 };
diff --git a/tool/compile-mdx.ts b/tool/compile-mdx.ts
index 6c282835..bea21edc 100644
--- a/tool/compile-mdx.ts
+++ b/tool/compile-mdx.ts
@@ -73,7 +73,6 @@ async function run(): Promise<void> {
  * @remarks
  * This is an async generator because it's recursive.
  */
-// biome-ignore lint/nursery/useAwait: for-await isn't caught correctly.
 async function* getSolutions(
   basePath: string,
   currentPath: string = basePath,
@@ -134,7 +133,6 @@ function lint(files: VFile[]): void {
  * @param initialFiles A list of virtual MDX files for compilation.
  * @returns A list of virtual JS files.
  */
-// biome-ignore lint/nursery/useAwait: for-await isn't caught correctly.
 async function* compileSolutions(
   initialFiles: AsyncIterable<VFile>,
 ): AsyncGenerator<VFile, void, unknown> {
@@ -202,8 +200,8 @@ async function writeSolutions(solutions: VFile[]): Promise<void> {
  * @param solution A file to write.
  * @returns A promise resolving when the file's written.
  */
-function writeSolution(solution: VFile): Promise<void> {
-  return Deno.writeTextFile(
+async function writeSolution(solution: VFile): Promise<void> {
+  return await Deno.writeTextFile(
     join(contentDir, solution.path),
     solution.toString(),
   );