diff --git a/.changeset/update-typescript-go.md b/.changeset/update-typescript-go.md
new file mode 100644
index 00000000..4b43b6cf
--- /dev/null
+++ b/.changeset/update-typescript-go.md
@@ -0,0 +1,5 @@
+---
+"@effect/tsgo": patch
+---
+
+Update [`typescript-go`](https://github.com/microsoft/typescript-go/commit/e1f8f977a8f7c5284fb9bba22efdeaf620151a13) to commit `e1f8f977a8f7c5284fb9bba22efdeaf620151a13`.
diff --git a/flake.nix b/flake.nix
index f292fdcd..ba00f6e8 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,7 +7,7 @@
     /* Source of truth: git submodule `typescript-go` commit.
        Keep in sync via `_tools/update-flake-vendor-hash.sh`. */
     typescript-go-src = {
-      url = "github:microsoft/typescript-go/18f93b85d447e24e9a03188dd630e7395cad5fe1?submodules=1";
+      url = "github:microsoft/typescript-go/e1f8f977a8f7c5284fb9bba22efdeaf620151a13?submodules=1";
       flake = false;
     };
     /* Source of truth: typescript-go's `_submodules/TypeScript` commit.
diff --git a/shim/ast/shim.go b/shim/ast/shim.go
index 507d6073..781e3faf 100644
--- a/shim/ast/shim.go
+++ b/shim/ast/shim.go
@@ -421,6 +421,8 @@ func GetNameOfDeclaration(declaration *ast.Node) *ast.Node
 func GetNamespaceDeclarationNode(node *ast.Node) *ast.Node
 //go:linkname GetNewTargetContainer github.com/microsoft/typescript-go/internal/ast.GetNewTargetContainer
 func GetNewTargetContainer(node *ast.Node) *ast.Node
+//go:linkname GetNextJSDocCommentLocation github.com/microsoft/typescript-go/internal/ast.GetNextJSDocCommentLocation
+func GetNextJSDocCommentLocation(node *ast.Node) *ast.Node
 //go:linkname GetNodeAtPosition github.com/microsoft/typescript-go/internal/ast.GetNodeAtPosition
 func GetNodeAtPosition(file *ast.SourceFile, position int, includeJSDoc bool) *ast.Node
 //go:linkname GetNodeId github.com/microsoft/typescript-go/internal/ast.GetNodeId
@@ -578,6 +580,8 @@ func IsAdditiveOperatorOrHigher(kind ast.Kind) bool
 func IsAliasSymbolDeclaration(node *ast.Node) bool
 //go:linkname IsAmbientModule github.com/microsoft/typescript-go/internal/ast.IsAmbientModule
 func IsAmbientModule(node *ast.Node) bool
+//go:linkname IsAmbientModuleSymbolName github.com/microsoft/typescript-go/internal/ast.IsAmbientModuleSymbolName
+func IsAmbientModuleSymbolName(s string) bool
 //go:linkname IsAnyExportAssignment github.com/microsoft/typescript-go/internal/ast.IsAnyExportAssignment
 func IsAnyExportAssignment(node *ast.Node) bool
 //go:linkname IsAnyImportOrReExport github.com/microsoft/typescript-go/internal/ast.IsAnyImportOrReExport
diff --git a/typescript-go b/typescript-go
index 18f93b85..e1f8f977 160000
--- a/typescript-go
+++ b/typescript-go
@@ -1 +1 @@
-Subproject commit 18f93b85d447e24e9a03188dd630e7395cad5fe1
+Subproject commit e1f8f977a8f7c5284fb9bba22efdeaf620151a13