diff --git a/.changes/dialog-save-return-fix.md b/.changes/dialog-save-return-fix.md
new file mode 100644
index 000000000..89366bde0
--- /dev/null
+++ b/.changes/dialog-save-return-fix.md
@@ -0,0 +1,5 @@
+---
+"api": patch
+---
+
+Fix `dialog.save` return type
diff --git a/tooling/api/src/dialog.ts b/tooling/api/src/dialog.ts
index 7443e77bd..4d016d248 100644
--- a/tooling/api/src/dialog.ts
+++ b/tooling/api/src/dialog.ts
@@ -189,7 +189,7 @@ async function open(
  *
  * @since 1.0.0
  */
-async function save(options: SaveDialogOptions = {}): Promise<string> {
+async function save(options: SaveDialogOptions = {}): Promise<string | null> {
   if (typeof options === 'object') {
     Object.freeze(options)
   }