diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 3994982..d35d14e 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -16,11 +16,11 @@ jobs:
     - uses: actions/checkout@v5.0.0
     - uses: actions/setup-python@v6.0.0
       with:
-        python-version: 3.11
+        python-version: 3.13
     - name: Run make check
       run: |
         tools/ci-build.sh
-    - uses: softprops/action-gh-release@v2.3.2
+    - uses: softprops/action-gh-release@v2.4.1
       if: startsWith(github.ref, 'refs/tags/')
       with:
         files: dist/*.oxt
@@ -32,11 +32,11 @@ jobs:
       - uses: actions/checkout@v5.0.0
       - uses: actions/setup-python@v6.0.0
         with:
-          python-version: 3.11
+          python-version: 3.13
       - name: Run make pack
         run: |
           tools/ci-build.ps1
-      - uses: softprops/action-gh-release@v2.3.2
+      - uses: softprops/action-gh-release@v2.4.1
         if: startsWith(github.ref, 'refs/tags/')
         with:
           files: dist/*.msi
diff --git a/Makefile b/Makefile
index 96bcb1d..b2537ec 100644
--- a/Makefile
+++ b/Makefile
@@ -29,7 +29,7 @@ check: check-mypy check-flake8 check-pylint check-unit
 	@echo "make check: ok"
 
 check-mypy: $(PYTHON_OBJECTS) Makefile requirements.txt
-	env PYTHONPATH=.:tests mypy --python-version 3.11 --strict --no-error-summary $(PYTHON_OBJECTS) && touch $@
+	env PYTHONPATH=.:tests mypy --python-version 3.13 --strict --no-error-summary $(PYTHON_OBJECTS) && touch $@
 
 check-flake8: $(patsubst %.py,%.flake8,$(PYTHON_OBJECTS))
 
diff --git a/guide/src/hacking.md b/guide/src/hacking.md
index a546ff5..bc5b3d4 100644
--- a/guide/src/hacking.md
+++ b/guide/src/hacking.md
@@ -5,7 +5,7 @@
 Create it:
 
 ```
-python3.11 -m venv ged2dot-env
+python3 -m venv ged2dot-env
 ```
 
 Activate it:
diff --git a/requirements.txt b/requirements.txt
index 8ba4129..e5e71d2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
-coverage==7.10.6
+coverage==7.11.0
 flake8==7.3.0
-mypy==1.17.1
+mypy==1.18.2
 pygraphviz==1.14
-pyinstaller==6.15.0
-pylint==3.3.8
+pyinstaller==6.16.0
+pylint==4.0.2
 pyqt6==6.7.1
diff --git a/tests/test_ged2dot.py b/tests/test_ged2dot.py
index 4fa8ee8..cd5e21e 100644
--- a/tests/test_ged2dot.py
+++ b/tests/test_ged2dot.py
@@ -160,9 +160,9 @@ def test_happy(self) -> None:
         tree = ET.parse(stream)
         root = tree.getroot()
         row = root.find("tr")
-        assert row
+        assert row is not None
         cell = row.find("td")
-        assert cell
+        assert cell is not None
         img = cell.find("img")
         assert img is not None
         actual_src = img.attrib.get("src")