diff --git a/.github/actions/install/action.yml b/.github/actions/install/action.yml
index 91fa5512..2b5fa598 100644
--- a/.github/actions/install/action.yml
+++ b/.github/actions/install/action.yml
@@ -17,7 +17,7 @@ inputs:
   zig-v8:
     description: 'zig v8 version to install'
     required: false
-    default: 'v0.1.16'
+    default: 'v0.1.17'
   v8:
     description: 'v8 version to install'
     required: false
diff --git a/src/wpt/run.zig b/src/wpt/run.zig
index b152b5bd..e0a0c3f0 100644
--- a/src/wpt/run.zig
+++ b/src/wpt/run.zig
@@ -26,6 +26,7 @@ const parser = @import("netsurf");
 const jsruntime = @import("jsruntime");
 const Loop = jsruntime.Loop;
 const Env = jsruntime.Env;
+const browser = @import("../browser/browser.zig");
 const Window = @import("../html/window.zig").Window;
 const storage = @import("../storage/storage.zig");
 const HttpClient = @import("../http/client.zig").Client;
@@ -61,14 +62,20 @@ pub fn run(arena: *std.heap.ArenaAllocator, comptime dir: []const u8, f: []const
     var cookie_jar = storage.CookieJar.init(alloc);
     defer cookie_jar.deinit();
 
+    var renderer = browser.Renderer.init(alloc);
+    defer renderer.elements.deinit(alloc);
+    defer renderer.positions.deinit(alloc);
+
     var js_env: Env = undefined;
     Env.init(&js_env, alloc, &loop, UserContext{
         .document = html_doc,
         .cookie_jar = &cookie_jar,
         .http_client = &http_client,
         .uri = try std.Uri.parse("https://lightpanda.io"),
+        .renderer = &renderer,
     });
     defer js_env.deinit();
+    errdefer js_env.wait() catch unreachable;
 
     var storageShelf = storage.Shelf.init(alloc);
     defer storageShelf.deinit();
diff --git a/vendor/zig-js-runtime b/vendor/zig-js-runtime
index 6b48960a..f3a9e3d4 160000
--- a/vendor/zig-js-runtime
+++ b/vendor/zig-js-runtime
@@ -1 +1 @@
-Subproject commit 6b48960a0664b74016c777da5e3f9129e5f041f7
+Subproject commit f3a9e3d448cd56a709ec2d101c05507e894d8e6f