diff --git a/extensions/ipynb/src/common.ts b/extensions/ipynb/src/common.ts
index feb77ba9df3..d361d554877 100644
--- a/extensions/ipynb/src/common.ts
+++ b/extensions/ipynb/src/common.ts
@@ -40,3 +40,23 @@ export interface CellOutputMetadata {
 	 */
 	__isJson?: boolean;
 }
+
+
+/**
+ * Metadata we store in VS Code cells.
+ * This contains the original metadata from the Jupyuter cells.
+ */
+export interface CellMetadata {
+	/**
+	 * Cell id for notebooks created with the new 4.5 version of nbformat.
+	*/
+	id?: string;
+	/**
+	 * Stores attachments for cells.
+	 */
+	attachments?: nbformat.IAttachments;
+	/**
+	 * Stores cell metadata.
+	 */
+	metadata?: Partial<nbformat.ICellMetadata>;
+}
diff --git a/extensions/ipynb/src/deserializers.ts b/extensions/ipynb/src/deserializers.ts
index 4ed27d23e7b..e98bf286efc 100644
--- a/extensions/ipynb/src/deserializers.ts
+++ b/extensions/ipynb/src/deserializers.ts
@@ -5,7 +5,7 @@
 
 import { nbformat } from '@jupyterlab/coreutils';
 import { extensions, NotebookCellData, NotebookCellExecutionSummary, NotebookCellKind, NotebookCellOutput, NotebookCellOutputItem, NotebookData } from 'vscode';
-import { CellOutputMetadata } from './common';
+import { CellMetadata, CellOutputMetadata } from './common';
 
 const jupyterLanguageToMonacoLanguageMapping = new Map([
 	['c#', 'csharp'],
@@ -146,21 +146,6 @@ function convertJupyterOutputToBuffer(mime: string, value: unknown): NotebookCel
 	}
 }
 
-/**
- * Metadata we store in VS Code cells.
- * This contains the original metadata from the Jupyuter cells.
- */
-interface CellMetadata {
-	/**
-	 * Stores attachments for cells.
-	 */
-	attachments?: nbformat.IAttachments;
-	/**
-	 * Stores cell metadata.
-	 */
-	metadata?: Partial<nbformat.ICellMetadata>;
-}
-
 function getNotebookCellMetadata(cell: nbformat.IBaseCell): CellMetadata {
 	// We put this only for VSC to display in diff view.
 	// Else we don't use this.
@@ -171,6 +156,9 @@ function getNotebookCellMetadata(cell: nbformat.IBaseCell): CellMetadata {
 			custom[propertyToClone] = JSON.parse(JSON.stringify(cell[propertyToClone]));
 		}
 	});
+	if ('id' in cell && typeof cell.id === 'string') {
+		custom.id = cell.id;
+	}
 	return custom;
 }
 function getOutputMetadata(output: nbformat.IOutput): CellOutputMetadata {
diff --git a/extensions/ipynb/src/serializers.ts b/extensions/ipynb/src/serializers.ts
index 11587bb4296..b7e3f574f63 100644
--- a/extensions/ipynb/src/serializers.ts
+++ b/extensions/ipynb/src/serializers.ts
@@ -5,7 +5,7 @@
 
 import { nbformat } from '@jupyterlab/coreutils';
 import { NotebookCellData, NotebookCellKind, NotebookCellOutput } from 'vscode';
-import { CellOutputMetadata } from './common';
+import { CellMetadata, CellOutputMetadata } from './common';
 import { textMimeTypes } from './deserializers';
 
 const textDecoder = new TextDecoder();
@@ -62,6 +62,9 @@ function createCodeCellFromNotebookCell(cell: NotebookCellData): nbformat.ICodeC
 		outputs: (cell.outputs || []).map(translateCellDisplayOutput),
 		metadata: cellMetadata?.metadata || {} // This cannot be empty.
 	};
+	if (cellMetadata?.id) {
+		codeCell.id = cellMetadata.id;
+	}
 	return codeCell;
 }
 
@@ -75,6 +78,9 @@ function createRawCellFromNotebookCell(cell: NotebookCellData): nbformat.IRawCel
 	if (cellMetadata?.attachments) {
 		rawCell.attachments = cellMetadata.attachments;
 	}
+	if (cellMetadata?.id) {
+		rawCell.id = cellMetadata.id;
+	}
 	return rawCell;
 }
 
@@ -322,24 +328,12 @@ function createMarkdownCellFromNotebookCell(cell: NotebookCellData): nbformat.IM
 	if (cellMetadata?.attachments) {
 		markdownCell.attachments = cellMetadata.attachments;
 	}
+	if (cellMetadata?.id) {
+		markdownCell.id = cellMetadata.id;
+	}
 	return markdownCell;
 }
 
-/**
- * Metadata we store in VS Code cells.
- * This contains the original metadata from the Jupyuter cells.
- */
-interface CellMetadata {
-	/**
-	 * Stores attachments for cells.
-	 */
-	attachments?: nbformat.IAttachments;
-	/**
-	 * Stores cell metadata.
-	 */
-	metadata?: Partial<nbformat.ICellMetadata>;
-}
-
 export function pruneCell(cell: nbformat.ICell): nbformat.ICell {
 	// Source is usually a single string on input. Convert back to an array
 	const result = {