diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index ced34de2d..136d7b76f 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -14,7 +14,7 @@
   // Use 'postCreateCommand' to run commands after the container is created.
   "postCreateCommand": "pip3 install --user -e canopeum_backend[dev]",
   // https://github.com/astral-sh/uv/issues/5964
-  // "postCreateCommand": "cd canopeum_backend && uv sync --locked --extra dev",
+  // "postCreateCommand": "cd canopeum_backend && uv sync --locked",
   "features": {
     "ghcr.io/devcontainers/features/node:1": {}
   },
diff --git a/.github/workflows/canopeum_backend_pr_validation.yml b/.github/workflows/canopeum_backend_pr_validation.yml
index d50df8f0e..f2e8465bb 100644
--- a/.github/workflows/canopeum_backend_pr_validation.yml
+++ b/.github/workflows/canopeum_backend_pr_validation.yml
@@ -33,7 +33,7 @@ jobs:
         with:
           enable-cache: true
           cache-dependency-glob: "canopeum_backend/uv.lock"
-      - run: uv sync --locked --extra dev
+      - run: uv sync --locked
       - name: Run Django Tests
         run: uv run manage.py test
   mypy:
@@ -48,7 +48,7 @@ jobs:
         with:
           enable-cache: true
           cache-dependency-glob: "canopeum_backend/uv.lock"
-      - run: uv sync --locked --extra dev
+      - run: uv sync --locked
       - run: uv run mypy . --python-version=3.12
 
   pyright:
@@ -63,7 +63,7 @@ jobs:
         with:
           enable-cache: true
           cache-dependency-glob: "canopeum_backend/uv.lock"
-      - run: uv sync --locked --extra dev
+      - run: uv sync --locked
       - run: echo "$PWD/.venv/bin" >> $GITHUB_PATH
       - uses: jakebailey/pyright-action@v2
         with:
diff --git a/README.md b/README.md
index 7042028c2..0866fc3c7 100644
--- a/README.md
+++ b/README.md
@@ -67,7 +67,7 @@ For backend
    ```shell
    cd canopeum_backend
    docker compose up
-   uv sync --locked --extra dev
+   uv sync --locked
    uv run manage.py initialize_database
    uv run manage.py runserver
    ```
diff --git a/canopeum_backend/Dockerfile b/canopeum_backend/Dockerfile
index 9b54bafb8..605878c4c 100644
--- a/canopeum_backend/Dockerfile
+++ b/canopeum_backend/Dockerfile
@@ -9,7 +9,7 @@ WORKDIR /app
 COPY 'pyproject.toml' /app/
 COPY 'uv.lock' /app/
 
-RUN uv sync --locked
+RUN uv sync --locked --no-dev
 
 COPY . /app/
 
diff --git a/canopeum_backend/pyproject.toml b/canopeum_backend/pyproject.toml
index 927d2e01e..3da267d96 100644
--- a/canopeum_backend/pyproject.toml
+++ b/canopeum_backend/pyproject.toml
@@ -22,7 +22,7 @@ dependencies = [
   "requests-cache>=1.2.1",
   "retry-requests>=2.0.0",
 ]
-[project.optional-dependencies]
+[dependency-groups]
 dev = [
   # Tools
   "mypy", # version taken from [compatible-mypy],
diff --git a/canopeum_backend/uv.lock b/canopeum_backend/uv.lock
index 703e647c7..bce744309 100644
--- a/canopeum_backend/uv.lock
+++ b/canopeum_backend/uv.lock
@@ -40,7 +40,7 @@ dependencies = [
     { name = "retry-requests" },
 ]
 
-[package.optional-dependencies]
+[package.dev-dependencies]
 dev = [
     { name = "django-stubs", extra = ["compatible-mypy"] },
     { name = "djangorestframework-stubs", extra = ["compatible-mypy"] },
@@ -55,23 +55,27 @@ requires-dist = [
     { name = "dj-database-url" },
     { name = "django", specifier = ">=5.0.8" },
     { name = "django-cors-headers" },
-    { name = "django-stubs", extras = ["compatible-mypy"], marker = "extra == 'dev'", specifier = ">=5.0.0" },
     { name = "djangorestframework", specifier = ">=3.15.2" },
     { name = "djangorestframework-camel-case" },
     { name = "djangorestframework-simplejwt" },
-    { name = "djangorestframework-stubs", extras = ["compatible-mypy"], marker = "extra == 'dev'", specifier = ">=3.15.0" },
     { name = "drf-spectacular", specifier = ">=0.27.2" },
     { name = "drf-spectacular-sidecar" },
     { name = "googlemaps" },
-    { name = "mypy", marker = "extra == 'dev'" },
     { name = "mysqlclient" },
     { name = "openmeteo-requests", specifier = ">=1.3.0" },
-    { name = "pyright", marker = "extra == 'dev'", specifier = ">=1.1.374" },
     { name = "python-dotenv" },
     { name = "requests-cache", specifier = ">=1.2.1" },
     { name = "retry-requests", specifier = ">=2.0.0" },
-    { name = "ruff", marker = "extra == 'dev'", specifier = "~=0.7.4" },
-    { name = "types-jsonschema", marker = "extra == 'dev'" },
+]
+
+[package.metadata.requires-dev]
+dev = [
+    { name = "django-stubs", extras = ["compatible-mypy"], specifier = ">=5.0.0" },
+    { name = "djangorestframework-stubs", extras = ["compatible-mypy"], specifier = ">=3.15.0" },
+    { name = "mypy" },
+    { name = "pyright", specifier = ">=1.1.374" },
+    { name = "ruff", specifier = "~=0.7.4" },
+    { name = "types-jsonschema" },
 ]
 
 [[package]]
diff --git a/start-local-env.ps1 b/start-local-env.ps1
index 8bb514b5e..ab0e74526 100644
--- a/start-local-env.ps1
+++ b/start-local-env.ps1
@@ -28,7 +28,7 @@ function Start-MySQLContainer {
 # Run Django server
 $commandsBackend = @'
   cd canopeum_backend
-  uv sync --locked --extra dev
+  uv sync --locked
   uv run manage.py runserver
 '@