diff --git a/.gitattributes b/.gitattributes
index ba919a1..c1044f6 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -14,7 +14,8 @@ mkdocs.yml export-ignore
 mypy.ini export-ignore
 pyproject.toml export-ignore
 pyrightconfig.json export-ignore
-requirements.txt export-ignore
+requirements-* export-ignore
+requirements.* export-ignore
 scripts/ export-ignore
 stubs/ export-ignore
 tests/ export-ignore
diff --git a/.github/workflows/python.yml b/.github/workflows/python.yml
index 2056ad9..3d954d6 100644
--- a/.github/workflows/python.yml
+++ b/.github/workflows/python.yml
@@ -26,6 +26,9 @@ jobs:
     name: ${{ matrix.python-version }}
     runs-on: ${{ matrix.os }}
 
+    env:
+      UV_SYSTEM_PYTHON: 1
+
     strategy:
       matrix:
         os: ['ubuntu-latest']
@@ -44,7 +47,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install -U uv
-          make UV_INSTALL_FLAGS="--system" install
+          make install-dev
 
       - name: Do linting
         run: |
diff --git a/Makefile b/Makefile
index 2aca929..4415944 100644
--- a/Makefile
+++ b/Makefile
@@ -7,9 +7,18 @@ all:
 install:
 	uv pip install $(UV_INSTALL_FLAGS) -r requirements.txt
 
+.PHONY: install-dev
+install-dev:
+	uv pip install $(UV_INSTALL_FLAGS) -r requirements-dev.txt
+
 .PHONY: pip-compile
 pip-compile:
 	uv pip compile --upgrade requirements.in -o requirements.txt
+	uv pip compile --upgrade requirements-dev.in -o requirements-dev.txt
+
+.PHONY: update-changelog
+update-changelog:
+	git cliff --output=CHANGELOG.md
 
 .PHONY: ci-check
 ci-check:
diff --git a/requirements-dev.in b/requirements-dev.in
new file mode 100644
index 0000000..b7f9e8e
--- /dev/null
+++ b/requirements-dev.in
@@ -0,0 +1,12 @@
+-r requirements.in
+
+mypy
+ruff>=0.4
+
+# ----------- #
+# for scripts #
+# ----------- #
+
+tinycss2
+typer>=0.12.3,<1
+typing_extensions
diff --git a/requirements-dev.txt b/requirements-dev.txt
new file mode 100644
index 0000000..e555ca0
--- /dev/null
+++ b/requirements-dev.txt
@@ -0,0 +1,33 @@
+# This file was autogenerated by uv via the following command:
+#    uv pip compile requirements-dev.in -o requirements-dev.txt
+click==8.1.7
+    # via typer
+colorama==0.4.6
+    # via click
+markdown-it-py==3.0.0
+    # via rich
+mdurl==0.1.2
+    # via markdown-it-py
+mypy==1.10.0
+    # via -r requirements-dev.in
+mypy-extensions==1.0.0
+    # via mypy
+pygments==2.18.0
+    # via rich
+rich==13.7.1
+    # via typer
+ruff==0.4.4
+    # via -r requirements-dev.in
+shellingham==1.5.4
+    # via typer
+tinycss2==1.3.0
+    # via -r requirements-dev.in
+typer==0.12.3
+    # via -r requirements-dev.in
+typing-extensions==4.11.0
+    # via
+    #   -r requirements-dev.in
+    #   mypy
+    #   typer
+webencodings==0.5.1
+    # via tinycss2
diff --git a/requirements.in b/requirements.in
index 5a82380..e69de29 100644
--- a/requirements.in
+++ b/requirements.in
@@ -1,10 +0,0 @@
-mypy
-ruff>=0.3
-
-# ----------- #
-# for scripts #
-# ----------- #
-
-tinycss2
-typer>=0.12.3,<1
-typing_extensions
diff --git a/requirements.txt b/requirements.txt
index 8cfab3f..e9aaf47 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,28 +1,2 @@
 # This file was autogenerated by uv via the following command:
 #    uv pip compile requirements.in -o requirements.txt
-click==8.1.7
-    # via typer
-colorama==0.4.6
-    # via click
-markdown-it-py==3.0.0
-    # via rich
-mdurl==0.1.2
-    # via markdown-it-py
-mypy==1.9.0
-mypy-extensions==1.0.0
-    # via mypy
-pygments==2.17.2
-    # via rich
-rich==13.7.1
-    # via typer
-ruff==0.3.7
-shellingham==1.5.4
-    # via typer
-tinycss2==1.2.1
-typer==0.12.3
-typing-extensions==4.11.0
-    # via
-    #   mypy
-    #   typer
-webencodings==0.5.1
-    # via tinycss2