diff --git a/app/api/v1/__init__.py b/app/api/v1/__init__.py
index a232daf..47502ff 100644
--- a/app/api/v1/__init__.py
+++ b/app/api/v1/__init__.py
@@ -1,9 +1,11 @@
 from fastapi import APIRouter
 from .todos import router as todos_router
 from .categories import router as categories_router
+from .projects import router as projects_router
 
 api_router = APIRouter()
 api_router.include_router(todos_router, prefix="/todos", tags=["todos"])
 api_router.include_router(categories_router, prefix="/categories", tags=["categories"])
+api_router.include_router(projects_router, prefix="/projects", tags=["projects"])
 
 __all__ = ["api_router"]
diff --git a/app/models/__init__.py b/app/models/__init__.py
index abd979d..79623a1 100644
--- a/app/models/__init__.py
+++ b/app/models/__init__.py
@@ -1,7 +1,5 @@
 from .todo import Todo
 from .category import Category
 from .project import Project
-from .tag import Tag
-from .todo_tag import todo_tags
 
-__all__ = ["Todo", "Category", "Project", "Tag", "todo_tags"]
+__all__ = ["Todo", "Category", "Project"]
diff --git a/app/models/todo.py b/app/models/todo.py
index 59d70b1..db1349f 100644
--- a/app/models/todo.py
+++ b/app/models/todo.py
@@ -32,9 +32,6 @@ class Todo(Base):
     # Relationship to category
     category = relationship("Category", back_populates="todos")
 
-    # Many-to-many relationship with tags
-    tags = relationship("Tag", secondary="todo_tags", back_populates="todos")
-
     # Self-referential relationship for subtasks
     parent = relationship("Todo", remote_side=[id], back_populates="children")
     children = relationship(
diff --git a/app/schemas/__init__.py b/app/schemas/__init__.py
index 2ec090e..7b472da 100644
--- a/app/schemas/__init__.py
+++ b/app/schemas/__init__.py
@@ -1,6 +1,5 @@
 from .todo import Todo, TodoCreate, TodoUpdate, TodoListResponse
 from .category import Category, CategoryCreate, CategoryUpdate
-from .tag import Tag, TagCreate, TagUpdate, TagListResponse
 from .project import (
     Project,
     ProjectCreate,
@@ -17,10 +16,6 @@ __all__ = [
     "Category",
     "CategoryCreate",
     "CategoryUpdate",
-    "Tag",
-    "TagCreate",
-    "TagUpdate",
-    "TagListResponse",
     "Project",
     "ProjectCreate",
     "ProjectUpdate",