diff --git a/nodes_dict.py b/nodes_dict.py
index 066349b..655a91b 100644
--- a/nodes_dict.py
+++ b/nodes_dict.py
@@ -64,6 +64,58 @@ class DictAddAny(_BaseNode):
 			result = _new_dict_with_updated_key(dict, name, value)
 		return _io.NodeOutput(result)
 
+# ----------------------------------------------------------
+
+class DictAddString(_BaseNode):
+	"""Add/update a string to a Format-Dict."""
+	_schema = _io.Schema(
+		node_id=f'DictAddString{_pack_id}',
+		display_name='Add String to Dict',
+		category=_category_dict,
+		description=_format_docstring(_cleandoc(__doc__)),
+		inputs=[
+			_io.String.Input(
+				'name',
+				tooltip=(
+					"Name (key) of the string inserted into the dict. "
+					"It must comprise only of latin letters, digits and underscores + it can't start with a digit."
+				),
+			),
+			_io.Boolean.Input(
+				'cleanup',
+				tooltip=(
+					"When enabled, each line in the sub-string is stripped "
+					"from any spaces at its start and end."
+				),
+				default=True,
+				label_on='leading/trailing spaces',
+				label_off='no',
+			),
+			_io.String.Input(
+				'string',
+				tooltip="The actual string to add into the dict.",
+				multiline=True,
+			),
+
+			_DICT_INPUT_OPTIONAL,
+		],
+		outputs=[_DICT_OUTPUT],
+	)
+
+	@classmethod
+	def execute(cls,
+		name: str, cleanup: bool, string: str,
+		dict: _O[_FormatDict] = None,
+	) -> _io.NodeOutput:
+		"""Update/append a string to the dict."""
+		string = '' if string is None else str(string)
+		if cleanup:
+			string = '\n'.join(
+				x.strip() for x in string.splitlines()
+			)
+		result= _new_dict_with_updated_key(dict, name, string)
+		return _io.NodeOutput(result)
+
 
 # ==========================================================
 # Deprecated nodes with old IDs (for backwards compatibility)
@@ -74,3 +126,10 @@ class DictAddAnyOld1(DictAddAny):
 		DictAddAny._schema,
 		'StringConstructorDictAddAny'
 	)
+
+
+class DictAddStringOld1(DictAddString):
+	_schema = _schema_old_name(
+		DictAddString._schema,
+		'StringConstructorDictAddString'
+	)