diff --git a/.github/workflows/pyright.yaml b/.github/workflows/pyright.yaml
index d7be324..9a9d3ca 100644
--- a/.github/workflows/pyright.yaml
+++ b/.github/workflows/pyright.yaml
@@ -16,10 +16,12 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v6
       with:
-        python-version: '3.x'
+        python-version: '3.13'
+    - name: Install uv
+      uses: astral-sh/setup-uv@v5
     - name: Install dependencies
       run: |
-        python -m pip install hatch
+        uv pip install --system hatch hatch-pip-compile
         hatch env create dev
     - run: echo "$(hatch env find dev)/bin" >> $GITHUB_PATH
     - name: Run pyright
diff --git a/.github/workflows/pytest.yaml b/.github/workflows/pytest.yaml
index f4b4fb1..538a0ea 100644
--- a/.github/workflows/pytest.yaml
+++ b/.github/workflows/pytest.yaml
@@ -15,17 +15,19 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
 
     steps:
     - uses: actions/checkout@v5
     - name: Set up Python
       uses: actions/setup-python@v6
       with:
-        python-version: '3.x'
+        python-version: ${{ matrix.python-version }}
+    - name: Install uv
+      uses: astral-sh/setup-uv@v5
     - name: Install dependencies
       run: |
-        python -m pip install hatch
+        uv pip install --system hatch hatch-pip-compile
         hatch env create dev
     - name: Test with pytest
       run: |
diff --git a/.github/workflows/ruff.yaml b/.github/workflows/ruff.yaml
index d2001be..ef9ec82 100644
--- a/.github/workflows/ruff.yaml
+++ b/.github/workflows/ruff.yaml
@@ -16,10 +16,12 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v6
       with:
-        python-version: '3.x'
+        python-version: '3.13'
+    - name: Install uv
+      uses: astral-sh/setup-uv@v5
     - name: Install dependencies
       run: |
-        python -m pip install hatch
+        uv pip install --system hatch hatch-pip-compile
         hatch env create dev
     - name: Lint with Ruff (check)
       run: |
diff --git a/requirements/requirements-dev.txt b/requirements/requirements-dev.txt
index dc7d7af..11f608a 100644
--- a/requirements/requirements-dev.txt
+++ b/requirements/requirements-dev.txt
@@ -9,16 +9,15 @@
 # - pytest-cov
 # - pytest-freezer
 # - pytest-github-actions-annotate-failures
-# - pytest-memray
 # - pytest-mock
 # - pytest-randomly
 # - requests-mock
 # - ruff
 # - typing_extensions
 # - makefun
-# - pychoir
 # - python-json-logger>=3.1.0
 # - requests
+# - pychoir
 #
 
 certifi==2025.10.5
@@ -45,8 +44,6 @@ idna==3.10
     # via requests
 iniconfig==2.1.0
     # via pytest
-jinja2==3.1.6
-    # via memray
 libcst==1.7.0
     # via mutmut
 linkify-it-py==2.0.3
@@ -58,14 +55,10 @@ markdown-it-py==4.0.0
     #   mdit-py-plugins
     #   rich
     #   textual
-markupsafe==3.0.3
-    # via jinja2
 mdit-py-plugins==0.5.0
     # via markdown-it-py
 mdurl==0.1.2
     # via markdown-it-py
-memray==1.19.1
-    # via pytest-memray
 mutmut==3.3.1
     # via hatch.envs.dev
 nodeenv==1.9.1
@@ -100,7 +93,6 @@ pytest==8.4.2
     #   pytest-cov
     #   pytest-freezer
     #   pytest-github-actions-annotate-failures
-    #   pytest-memray
     #   pytest-mock
     #   pytest-randomly
 pytest-cov==7.0.0
@@ -109,8 +101,6 @@ pytest-freezer==0.4.9
     # via hatch.envs.dev
 pytest-github-actions-annotate-failures==0.3.0
     # via hatch.envs.dev
-pytest-memray==1.8.0
-    # via hatch.envs.dev
 pytest-mock==3.15.1
     # via hatch.envs.dev
 pytest-randomly==4.0.1
@@ -130,9 +120,7 @@ requests==2.32.5
 requests-mock==1.12.1
     # via hatch.envs.dev
 rich==14.2.0
-    # via
-    #   memray
-    #   textual
+    # via textual
 ruff==0.14.0
     # via hatch.envs.dev
 setproctitle==1.3.7
@@ -140,9 +128,7 @@ setproctitle==1.3.7
 six==1.17.0
     # via python-dateutil
 textual==6.2.1
-    # via
-    #   memray
-    #   mutmut
+    # via mutmut
 typing-extensions==4.15.0
     # via
     #   hatch.envs.dev