diff --git a/CHANGELOG.md b/CHANGELOG.md
index f0cb6caf..b82676c4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## Next Release
+
+**New Features and Enhancements**
+
+- Add ability to add an option to a metadata template multi select field ([#230](https://github.com/box/boxcli/pull/230))
+
 ## 2.8.0 (2020-12-03)
 
 **Warning:**
diff --git a/src/commands/metadata-templates/update.js b/src/commands/metadata-templates/update.js
index f851750e..92781632 100644
--- a/src/commands/metadata-templates/update.js
+++ b/src/commands/metadata-templates/update.js
@@ -90,6 +90,7 @@ const FLAG_HANDLERS = Object.freeze({
 		switch (currentOp.op) {
 		case 'addEnumOption':
 		case 'editEnumOption':
+		case 'addMultiSelectOption':
 			currentOp.data.key = value.input;
 			break;
 		case 'reorderEnumOptions':
@@ -228,6 +229,15 @@ const FLAG_HANDLERS = Object.freeze({
 			},
 		};
 	},
+	'add-multi-select-option': (value, currentOp, ops) => {
+		ops.push(currentOp);
+
+		return {
+			op: 'addMultiSelectOption',
+			fieldKey: value.input,
+			data: {},
+		};
+	},
 });
 
 /**
@@ -301,6 +311,10 @@ MetadataTemplatesUpdateCommand.flags = {
 		description: 'Add a multi-select field with the provided display name',
 		multiple: true,
 	}),
+	'add-multi-select-option': flags.string({
+		description: 'Add an option to a specified multiselect field; must be followed by one or more --option flags',
+		multiple: true,
+	}),
 	'field-key': flags.string({
 		description: 'Set the key of a field',
 		multiple: true,
diff --git a/test/commands/metadata-templates.test.js b/test/commands/metadata-templates.test.js
index ebdc485a..4c772785 100644
--- a/test/commands/metadata-templates.test.js
+++ b/test/commands/metadata-templates.test.js
@@ -439,6 +439,13 @@ describe('Metadata Templates', () => {
 					]
 				}
 			},
+			{
+				op: 'addMultiSelectOption',
+				fieldKey: 'foo',
+				data: {
+					key: 'bas',
+				},
+			},
 			{
 				op: 'addField',
 				data: {
@@ -488,6 +495,8 @@ describe('Metadata Templates', () => {
 				'--option=bar',
 				'--option=baz',
 				'--no-hidden',
+				'--add-multi-select-option=foo',
+				'--option=bas',
 				'--number=Count',
 				'--date=Date',
 				'--json',