diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2af281c7027..a9dae2451f0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -149,17 +149,17 @@ jobs:
       - name: Run unit tests
         run: >-
           nox -s test-${{ matrix.python.key || matrix.python }} --
-          -m unit
+          tests/unit
           --verbose --numprocesses auto --showlocals
       - name: Run integration tests
         run: >-
-          nox -s test-${{ matrix.python.key || matrix.python }} --
-          -m integration
+          nox -s test-${{ matrix.python.key || matrix.python }} --no-install --
+          tests/functional
           --verbose --numprocesses auto --showlocals
           --durations=5
 
   tests-windows:
-    name: tests / ${{ matrix.python }} / ${{ matrix.os }} / ${{ matrix.group }}
+    name: tests / ${{ matrix.python }} / ${{ matrix.os }} / ${{ matrix.group.number }}
     runs-on: ${{ matrix.os }}-latest
 
     needs: [packaging, determine-changes]
@@ -180,7 +180,9 @@ jobs:
           # - "3.11"
           # - "3.12"
           - "3.13"
-        group: [1, 2]
+        group:
+          - { number: 1, pytest-filter: "not test_install" }
+          - { number: 1, pytest-filter: "test_install" }
 
     steps:
       - uses: actions/checkout@v4
@@ -198,29 +200,19 @@ jobs:
           TEMP: "C:\\Temp"
 
       # Main check
-      - name: Run unit tests
-        if: matrix.group == 1
+      - name: Run unit tests (group 1)
+        if: matrix.group.number == 1
         run: >-
           nox -s test-${{ matrix.python }} --
-          -m unit
+          tests/unit
           --verbose --numprocesses auto --showlocals
         env:
           TEMP: "C:\\Temp"
 
-      - name: Run integration tests (group 1)
-        if: matrix.group == 1
+      - name: Run integration tests (group ${{ matrix.group.number }})
         run: >-
-          nox -s test-${{ matrix.python }} --
-          -m integration -k "not test_install"
-          --verbose --numprocesses auto --showlocals
-        env:
-          TEMP: "C:\\Temp"
-
-      - name: Run integration tests (group 2)
-        if: matrix.group == 2
-        run: >-
-          nox -s test-${{ matrix.python }} --
-          -m integration -k "test_install"
+          nox -s test-${{ matrix.python }} --no-install --
+          tests/functional -k "${{ matrix.group.pytest-filter }}"
           --verbose --numprocesses auto --showlocals
         env:
           TEMP: "C:\\Temp"
@@ -251,7 +243,7 @@ jobs:
       - name: Run integration tests
         run: >-
           nox -s test-3.10 --
-          -m integration
+          tests/functional
           --verbose --numprocesses auto --showlocals
           --durations=5
           --use-zipapp