diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 87158a7..dcf6f85 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,7 +23,7 @@ jobs:
     name: Pre-commit checks
     uses: beeware/.github/.github/workflows/pre-commit-run.yml@main
     with:
-      pre-commit-source: --group dev
+      pre-commit-source: --group pre-commit
 
   unit-tests:
     name: Unit tests
@@ -42,7 +42,7 @@ jobs:
       run: python -m pip install -U pip
 
     - name: Install Dependencies
-      run: python -m pip install --group dev
+      run: python -m pip install --group tox
 
     - name: Test with tox
       run: tox
diff --git a/pyproject.toml b/pyproject.toml
index d8c3b0e..5e413ef 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,12 +1,22 @@
 [dependency-groups]
+briefcase = [
+    "briefcase @ git+https://github.com/beeware/briefcase",  # provides cookiecutter
+]
+pre-commit = [
+    "pre-commit == 4.6.0",
+]
+tox = [
+    "tox == 4.54.0",
+]
 test = [
     "pytest == 9.0.3",
     "toml == 0.10.2",
     "flake8 == 7.3.0",
-    "briefcase @ git+https://github.com/beeware/briefcase.git",
+    {include-group = "briefcase"},
 ]
 dev = [
-    "tox == 4.54.0",
-    "pre-commit == 4.6.0",
-    "black == 26.5.1",
+    {include-group = "briefcase"},
+    {include-group = "pre-commit"},
+    {include-group = "tox"},
+    {include-group = "test"},
 ]