diff --git a/frontend/src/lib/types/Filter.ts b/frontend/src/lib/types/Filter.ts
index 27fafaf..01a5fd6 100644
--- a/frontend/src/lib/types/Filter.ts
+++ b/frontend/src/lib/types/Filter.ts
@@ -150,4 +150,20 @@ export default class Filter {
 
 		return new Filter(json.id, view, projectTag, json.filter_type, tagOption || null);
 	}
+
+	parseUpdate(changes: any) {
+		if (changes.tag_id) {
+			const projectTag = ProjectTag.fromId(changes.tag_id);
+			if (projectTag) this._projectTag = projectTag;
+		}
+
+		if (changes.filter_type) {
+			this._filterType = changes.filter_type;
+		}
+
+		if (changes.option_id) {
+			this._tagOption =
+				this.projectTag.options.find((option) => option.id === changes.option_id) || null;
+		}
+	}
 }
diff --git a/frontend/src/lib/types/ProjectTag.ts b/frontend/src/lib/types/ProjectTag.ts
index bf39e1e..729ee4a 100644
--- a/frontend/src/lib/types/ProjectTag.ts
+++ b/frontend/src/lib/types/ProjectTag.ts
@@ -1,9 +1,9 @@
 // import type TagOption from './TagOption';
 
-import { get, writable } from 'svelte/store';
-import TagOption from './TagOption';
-import Project from './Project';
 import projectTagsApi from '$lib/api/projectTagsApi';
+import { get, writable } from 'svelte/store';
+import Project from './Project';
+import TagOption from './TagOption';
 
 const { subscribe, update, set } = writable([] as ProjectTag[]);
 
@@ -149,4 +149,37 @@ export default class ProjectTag {
 
 		return projectTags;
 	}
+
+	static parseDelete(id: number) {
+		projectTags.update((projectTags) => projectTags.filter((projectTag) => projectTag.id !== id));
+	}
+
+	parseUpdate(json: any) {
+		if (!json) return;
+
+		if (json.title) this._title = json.title;
+		if (json.type) this._type = json.type;
+	}
+
+	parseOption(json: any) {
+		if (!json) return;
+
+		const option = TagOption.parse(json, this);
+		if (!option) return;
+
+		this._options = [...this._options, option];
+	}
+
+	parseOptionDelete(id: number) {
+		this._options = this._options.filter((option) => option.id !== id);
+	}
+
+	parseOptionUpdate(json: any) {
+		if (!json) return;
+
+		const option = this._options.find((option) => option.id === json.id);
+		if (!option) return;
+
+		option.parseUpdate(json);
+	}
 }
diff --git a/frontend/src/lib/types/TagOption.ts b/frontend/src/lib/types/TagOption.ts
index 0a0f3ff..b97ff86 100644
--- a/frontend/src/lib/types/TagOption.ts
+++ b/frontend/src/lib/types/TagOption.ts
@@ -73,4 +73,8 @@ export default class TagOption {
 
 		return options;
 	}
+
+	parseUpdate(dict: any) {
+		if (dict.value) this._value = dict.value;
+	}
 }
diff --git a/frontend/src/lib/types/View.ts b/frontend/src/lib/types/View.ts
index 1ef5e5c..5f93bd6 100644
--- a/frontend/src/lib/types/View.ts
+++ b/frontend/src/lib/types/View.ts
@@ -1,11 +1,11 @@
+import viewsApi from '$lib/api/viewsApi';
+import currentView from '$lib/stores/currentView';
+import { toastAlert } from '$lib/utils/toasts';
 import { get, writable } from 'svelte/store';
+import Filter from './Filter';
 import Project from './Project';
 import ProjectTag from './ProjectTag';
-import viewsApi from '$lib/api/viewsApi';
-import { toastAlert } from '$lib/utils/toasts';
-import Filter from './Filter';
 import type TagOption from './TagOption';
-import currentView from '$lib/stores/currentView';
 
 const { subscribe, set, update } = writable([] as View[]);
 
@@ -284,4 +284,24 @@ export default class View {
 
 		return views;
 	}
+
+	parseFilter(json: any) {
+		const filter = Filter.parse(json, this);
+
+		if (!filter) return;
+
+		this._filters = [...this._filters, filter];
+	}
+
+	parseFilterUpdate(json: any) {
+		const filter = this._filters.find((f) => f.id === json.id);
+
+		if (!filter) return;
+
+		filter.parseUpdate(json);
+	}
+
+	parseFilterDelete(id: number) {
+		this._filters = this._filters.filter((f) => f.id !== id);
+	}
 }
diff --git a/frontend/src/lib/utils/webSocketManager.ts b/frontend/src/lib/utils/webSocketManager.ts
index fc9a118..4ae721c 100644
--- a/frontend/src/lib/utils/webSocketManager.ts
+++ b/frontend/src/lib/utils/webSocketManager.ts
@@ -1,11 +1,9 @@
 import Card, { cards } from '$lib/types/Card';
-import CardTag from '$lib/types/CardTag';
 import Project, { projects } from '$lib/types/Project';
 import ProjectTag, { projectTags } from '$lib/types/ProjectTag';
 import View, { views } from '$lib/types/View';
 import { getBackendWsUrl, hasPendingRequests, randomID } from '$lib/utils/api';
 import { toastAlert, toastWarning } from '$lib/utils/toasts';
-import { get } from 'svelte/store';
 
 export default class WebSocketManager {
 	_socket: WebSocket | null;
@@ -95,6 +93,7 @@ function applyMessage(data: any) {
 	else if (data.object === 'card') applyCard(data);
 	else if (data.object === 'view') applyView(data);
 	else if (data.object === 'projectTag') applyProjectTag(data);
+	else if (data.object === 'tagOption') applyProjectTagOption(data);
 	else if (data.object === 'filter') applyFilter(data);
 	else toastWarning('Failed to parse WebSocket message: unknown object');
 }
@@ -195,6 +194,69 @@ function applyView(data: any) {
 	views.reload(view);
 }
 
-function applyProjectTag(data: any) {}
+function applyProjectTag(data: any) {
+	if (data.action === 'create') {
+		ProjectTag.parse(data.data);
+		return;
+	}
+	if (data.action === 'delete') {
+		ProjectTag.parseDelete(data.id);
+		return;
+	}
 
-function applyFilter(data: any) {}
+	if (data.action !== 'update') {
+		toastWarning('Failed to parse project tag update: unknown action');
+		return;
+	}
+
+	const projectTag = ProjectTag.fromId(data.id);
+	if (!projectTag) {
+		toastWarning('Failed to parse project tag update: project tag not found');
+		return;
+	}
+
+	projectTag.parseUpdate(data.changes);
+	projectTags.reload();
+}
+
+function applyProjectTagOption(data: any) {
+	const projectTag = ProjectTag.fromId(data.project_tag_id);
+	if (!projectTag) {
+		toastWarning('Failed to parse project tag option update: project tag not found');
+		return;
+	}
+
+	if (data.action === 'create') {
+		projectTag.parseOption(data.data);
+	} else if (data.action === 'update') {
+		projectTag.parseOptionUpdate(data.changes);
+	} else if (data.action === 'delete') {
+		projectTag.parseOptionDelete(data.id);
+	} else {
+		toastWarning('Failed to parse project tag option update: unknown action');
+		return;
+	}
+
+	projectTags.reload();
+}
+
+function applyFilter(data: any) {
+	const view = View.fromId(data.view_id);
+	if (!view) {
+		toastWarning('Failed to parse filter update: view not found');
+		return;
+	}
+
+	if (data.action === 'create') {
+		view.parseFilter(data.data);
+	} else if (data.action === 'update') {
+		view.parseFilterUpdate(data.changes);
+	} else if (data.action === 'delete') {
+		view.parseFilterDelete(data.id);
+	} else {
+		toastWarning('Failed to parse filter update: unknown action');
+		return;
+	}
+
+	views.reload(view);
+}