diff --git a/.changeset/fix-dialog-api-jsx-type.md b/.changeset/fix-dialog-api-jsx-type.md
new file mode 100644
index 0000000000..67ece8913b
--- /dev/null
+++ b/.changeset/fix-dialog-api-jsx-type.md
@@ -0,0 +1,5 @@
+---
+'@backstage/frontend-plugin-api': patch
+---
+
+Fixed inconsistent `JSX.Element` type reference in the `DialogApiDialog.update` method signature.
diff --git a/packages/frontend-plugin-api/report.api.md b/packages/frontend-plugin-api/report.api.md
index c83511fc47..8118e949c4 100644
--- a/packages/frontend-plugin-api/report.api.md
+++ b/packages/frontend-plugin-api/report.api.md
@@ -866,7 +866,7 @@ export interface DialogApiDialog<TResult = void> {
   result(): Promise<TResult>;
   update(
     elementOrComponent:
-      | React.JSX.Element
+      | JSX.Element
       | ((props: { dialog: DialogApiDialog<TResult> }) => JSX.Element),
   ): void;
 }
diff --git a/packages/frontend-plugin-api/src/apis/definitions/DialogApi.ts b/packages/frontend-plugin-api/src/apis/definitions/DialogApi.ts
index 85151b05f6..d7ab2e5d75 100644
--- a/packages/frontend-plugin-api/src/apis/definitions/DialogApi.ts
+++ b/packages/frontend-plugin-api/src/apis/definitions/DialogApi.ts
@@ -42,7 +42,7 @@ export interface DialogApiDialog<TResult = void> {
    */
   update(
     elementOrComponent:
-      | React.JSX.Element
+      | JSX.Element
       | ((props: { dialog: DialogApiDialog<TResult> }) => JSX.Element),
   ): void;