diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index a40d822f9..e2fb371b0 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -9,27 +9,34 @@ jobs:
     timeout-minutes: 30
     env:
       MPLBACKEND: agg
+      PIP_SELECTOR: '[tests]'
       PIP_ARGS: --upgrade -e
       PYTEST_ARGS: --pyargs lumispy
-      PYTEST_ARGS_COVERAGE: 
     strategy:
       fail-fast: false
       matrix:
         os: [ubuntu, windows, macos]
-        PYTHON_VERSION: ['3.8', '3.12']
-        PIP_SELECTOR: ['[tests]',]
+        PYTHON_VERSION: ['3.9', '3.12']
         include:
-          - os: ubuntu
-            PYTHON_VERSION: '3.9'
-            PIP_SELECTOR: '[tests]'
           - os: ubuntu
             PYTHON_VERSION: '3.10'
-            PIP_SELECTOR: '[tests]'
           - os: ubuntu
             PYTHON_VERSION: '3.11'
-            PIP_SELECTOR: '[tests, coverage]'
             PYTEST_ARGS_COVERAGE: --cov=lumispy --cov-report=xml
-            LABEL: '/coverage'
+            LABEL: '-coverage'
+          - os: ubuntu
+            PYTHON_VERSION: '3.13'
+          # minimum
+          - os: ubuntu
+            PYTHON_VERSION: '3.9'
+            LABEL: '-minimum'
+          # oldest
+          - os: ubuntu 
+            PYTHON_VERSION: '3.8'
+            LABEL: -release-oldest
+            # Matching pyproject.toml
+            DEPENDENCIES: hyperspy==1.7
+
     steps:
       - uses: actions/checkout@v4
 
@@ -48,6 +55,11 @@ jobs:
         run: |
           pip install ${{ env.PIP_ARGS }} .'${{ matrix.PIP_SELECTOR }}'
 
+      - name: Install oldest supported version
+        if: contains( matrix.LABEL, 'oldest')
+        run: |
+          pip install ${{ matrix.DEPENDENCIES }}
+
       - name: Pip list
         run: |
           pip list
diff --git a/pyproject.toml b/pyproject.toml
index 028a2e667..0ea5ce5f7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,6 +18,7 @@ classifiers = [
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "Topic :: Scientific/Engineering",
     "Topic :: Scientific/Engineering :: Physics",
     "Topic :: Software Development :: Libraries",