diff --git a/README.md b/README.md
index 46026fb..b6ec233 100644
--- a/README.md
+++ b/README.md
@@ -99,7 +99,7 @@ source .venv/bin/activate  # for Windows OS, .\.venv\Scripts\Activate instead sh
 #### Install dependencies
 
 ```sh
-pip install -r requirements.txt
+pip install ".[dev]"
 ```
 
 </details>
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index de5bfd5..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1,11 +0,0 @@
-slack-sdk==3.40.1
-slack-bolt==1.27.0
-slack-cli-hooks<1.0.0
-
-# If you use a different LLM vendor, replace this dependency
-openai==2.24.0
-
-pytest==9.0.2
-ruff==0.15.4
-python-dotenv==1.2.1
-slack-cli-hooks<1.0.0