diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8df3c0b..6390514 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
       - name: Install dependencies
         run: |
           pip install -U pip
-          pip install -r requirements.txt
+          pip install -e ".[dev]"
       - name: Lint and check formatting
         run: |
           ruff check .
@@ -45,7 +45,7 @@ jobs:
       - name: Install dependencies
         run: |
           pip install -U pip
-          pip install -r requirements.txt
+          pip install -e ".[dev]"
       - name: Run all tests
         run: |
           pytest . -v
diff --git a/README.md b/README.md
index 551d8d4..adfbc33 100644
--- a/README.md
+++ b/README.md
@@ -98,7 +98,7 @@ source .venv/bin/activate  # for Windows OS, .\.venv\Scripts\Activate instead sh
 #### Install dependencies
 
 ```sh
-pip3 install -r requirements.txt
+pip3 install -e ".[dev]"
 ```
 
 </details>
diff --git a/pyproject.toml b/pyproject.toml
index 1c0a283..aaa0287 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,20 @@
+[project]
+name = "bolt-python-custom-step-template"
+version = "0.0.0"
+requires-python = ">=3.10"
+dependencies = [
+    "slack-bolt==1.30.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest==9.1.1",
+    "ruff==0.16.9",
+]
+
+[tool.setuptools.packages.find]
+include = ["listeners*"]
+
 [tool.ruff]
 line-length = 125
 
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index cb0db96..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-slack-bolt==1.30.0
-pytest==9.1.1
-ruff==0.16.9