diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index c7d3962..c5072d9 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -16,6 +16,9 @@ jobs:
         os: [ ubuntu-18.04, macos-latest, windows-latest ]
     runs-on: ${{ matrix.os }}
     steps:
+      - uses: extractions/setup-just@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - uses: actions/checkout@v3
       - uses: actions/setup-python@v4
         with:
@@ -25,12 +28,8 @@ jobs:
         with:
           poetry-version: ${{ matrix.poetry-version }}
       - name: Install dependencies
-        run: poetry install
-      - name: Run Ruff
-        run: poetry run ruff ./ruff_lsp ./tests
-      - name: Run Black
-        run: poetry run black --check ./ruff_lsp ./tests
-      - name: Run Mypy
-        run: poetry run mypy ./ruff_lsp ./tests
-      - name: Run unittest
-        run: poetry run python -m unittest
+        run: just install
+      - name: Run checks
+        run: just check
+      - name: Run tests
+        run: just test
diff --git a/Makefile b/Makefile
deleted file mode 100644
index be4b963..0000000
--- a/Makefile
+++ /dev/null
@@ -1,13 +0,0 @@
-fmt:
-	poetry run ruff --fix ./ruff_lsp ./tests
-	poetry run black ./ruff_lsp ./tests
-
-check:
-	poetry run ruff ./ruff_lsp ./tests
-	poetry run black --check ./ruff_lsp ./tests
-	poetry run mypy ./ruff_lsp ./tests
-
-test:
-	poetry run python -m unittest
-
-.PHONY: fmt check test
diff --git a/README.md b/README.md
index fe74017..0b4b8fe 100644
--- a/README.md
+++ b/README.md
@@ -179,12 +179,16 @@ the following settings are supported:
 
 ## Development
 
+Install [`just`](https://github.com/casey/just).
+
 `ruff-lsp` uses Poetry for environment management and packaging. To get started, clone the
-repository, install Poetry, and run `poetry install`.
+repository, install Poetry, and run `poetry install` (or `just install`).
+
+To automatically format the codebase, run: `just fmt`.
 
-To automatically format the codebase, run: `make format`.
+To run lint and type checks, run: `just check`.
 
-To run lint and type checks, run: `make check`.
+To run tests, run: `just test`.
 
 ## License
 
diff --git a/justfile b/justfile
new file mode 100644
index 0000000..4eb40ce
--- /dev/null
+++ b/justfile
@@ -0,0 +1,19 @@
+default: fmt check
+
+lock:
+  poetry lock
+
+install:
+  poetry install
+
+fmt:
+  poetry run ruff --fix ./ruff_lsp ./tests
+  poetry run black ./ruff_lsp ./tests
+
+check:
+  poetry run ruff ./ruff_lsp ./tests
+  poetry run black --check ./ruff_lsp ./tests
+  poetry run mypy ./ruff_lsp ./tests
+
+test:
+  poetry run python -m unittest
diff --git a/poetry.lock b/poetry.lock
index 4572bfa..33dccb7 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -287,28 +287,28 @@ test = ["coverage", "pycodestyle", "pyflakes", "pylint", "pytest", "pytest-cov"]
 
 [[package]]
 name = "ruff"
-version = "0.0.192"
+version = "0.0.193"
 description = "An extremely fast Python linter, written in Rust."
 category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
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 ]
 
 [[package]]