diff --git a/.changeset/update-upstreams.md b/.changeset/update-upstreams.md
index 6be58494..5db621de 100644
--- a/.changeset/update-upstreams.md
+++ b/.changeset/update-upstreams.md
@@ -2,4 +2,4 @@
 "@effect/tsgo": patch
 ---
 
-Update the TypeScript next tag to [`typescript@next`](https://www.npmjs.com/package/typescript/v/7.1.0-dev.20260915.1), which ships [`typescript-go`](https://github.com/microsoft/typescript-go/commit/57d9528db25b8dc8375e18468a870ec3f4277d62) commit `57d9528db25b8dc8375e18468a870ec3f4277d62`, and update the TypeScript latest tag to [`typescript@latest`](https://www.npmjs.com/package/typescript/v/7.0.2).
+Update the TypeScript next tag to [`typescript@next`](https://www.npmjs.com/package/typescript/v/7.1.0-dev.20260916.1), which ships [`typescript-go`](https://github.com/microsoft/typescript-go/commit/d2b20b35034bd902bdda5974f522ff00352895e9) commit `d2b20b35034bd902bdda5974f522ff00352895e9`, and update the TypeScript latest tag to [`typescript@latest`](https://www.npmjs.com/package/typescript/v/7.0.2).
diff --git a/_packages/tsgo/upstream.json b/_packages/tsgo/upstream.json
index 1ee34dbe..cdb32f9f 100644
--- a/_packages/tsgo/upstream.json
+++ b/_packages/tsgo/upstream.json
@@ -3,7 +3,7 @@
   "tags": {
     "typescript": {
       "latest": "7.0.2",
-      "next": "7.1.0-dev.20260915.1"
+      "next": "7.1.0-dev.20260916.1"
     },
     "oxlint": {
       "latest": "1.83.0"
@@ -18,8 +18,8 @@
         "gitHead": "2bd066d87f5bafd315be9f40889d0a60b9e58e0b",
         "provider": "typescript-go"
       },
-      "7.1.0-dev.20260915.1": {
-        "gitHead": "57d9528db25b8dc8375e18468a870ec3f4277d62",
+      "7.1.0-dev.20260916.1": {
+        "gitHead": "d2b20b35034bd902bdda5974f522ff00352895e9",
         "provider": "typescript"
       }
     },
diff --git a/flake.lock b/flake.lock
index ff38c5a5..b2db940c 100644
--- a/flake.lock
+++ b/flake.lock
@@ -42,17 +42,17 @@
     "typescript-src": {
       "flake": false,
       "locked": {
-        "lastModified": 1789427885,
-        "narHash": "sha256-jmanZXjQAa6tOrbMMQ/mQnxN8mUelpJqL2sQrcCfQu0=",
+        "lastModified": 1789505560,
+        "narHash": "sha256-IoETNpBUJ7crjhjBYJHo22Hg9QmBSvBWGfrdRxWrMxQ=",
         "owner": "microsoft",
         "repo": "TypeScript",
-        "rev": "57d9528db25b8dc8375e18468a870ec3f4277d62",
+        "rev": "d2b20b35034bd902bdda5974f522ff00352895e9",
         "type": "github"
       },
       "original": {
         "owner": "microsoft",
         "repo": "TypeScript",
-        "rev": "57d9528db25b8dc8375e18468a870ec3f4277d62",
+        "rev": "d2b20b35034bd902bdda5974f522ff00352895e9",
         "type": "github"
       }
     }
diff --git a/flake.nix b/flake.nix
index 7161c6d6..72f7f1e8 100644
--- a/flake.nix
+++ b/flake.nix
@@ -6,7 +6,7 @@
     nixpkgsUnstable.url = "github:NixOS/nixpkgs/nixos-unstable";
     /* Source of truth: the next profile in `_packages/tsgo/upstream.json`. */
     typescript-src = {
-      url = "github:microsoft/TypeScript/57d9528db25b8dc8375e18468a870ec3f4277d62";
+      url = "github:microsoft/TypeScript/d2b20b35034bd902bdda5974f522ff00352895e9";
       flake = false;
     };
   };
diff --git a/shim/vfs/shim.go b/shim/vfs/shim.go
index 23d52806..4ebeb851 100644
--- a/shim/vfs/shim.go
+++ b/shim/vfs/shim.go
@@ -4,6 +4,8 @@
 package vfs
 
 import "github.com/microsoft/TypeScript/tsc/internal/vfs"
+import "io/fs"
+import _ "unsafe"
 
 type DirEntry = vfs.DirEntry
 type Entries = vfs.Entries
@@ -14,6 +16,5 @@ var ErrNotExist = vfs.ErrNotExist
 var ErrPermission = vfs.ErrPermission
 type FS = vfs.FS
 type FileInfo = vfs.FileInfo
-var SkipAll = vfs.SkipAll
-var SkipDir = vfs.SkipDir
-type WalkDirFunc = vfs.WalkDirFunc
+//go:linkname WalkDir github.com/microsoft/TypeScript/tsc/internal/vfs.WalkDir
+func WalkDir(fileSystem vfs.FS, root string, walkFn fs.WalkDirFunc) error
diff --git a/typescript b/typescript
index 57d9528d..d2b20b35 160000
--- a/typescript
+++ b/typescript
@@ -1 +1 @@
-Subproject commit 57d9528db25b8dc8375e18468a870ec3f4277d62
+Subproject commit d2b20b35034bd902bdda5974f522ff00352895e9