diff --git a/.github/workflows/system.yaml b/.github/workflows/system.yaml
index a0b15b8dc..b7d91f217 100644
--- a/.github/workflows/system.yaml
+++ b/.github/workflows/system.yaml
@@ -18,16 +18,9 @@ jobs:
     - uses: actions/checkout@v2
 
     - name: Set up CPython
-      if: ${{ matrix.tox_target == 'python-igraph-apidocs' }}
       uses: actions/setup-python@v2
       with:
-        python-version: '3.8'
-    
-    - name: Set up PyPy
-      if: ${{ matrix.tox_target != 'python-igraph-apidocs' }}
-      uses: actions/setup-python@v2
-      with:
-        python-version: 'pypy-3.6'
+        python-version: '3.11'
 
     - name: Install tox
       run: |
diff --git a/README.rst b/README.rst
index 8a9c2b594..b1cfe2376 100644
--- a/README.rst
+++ b/README.rst
@@ -76,6 +76,11 @@ What's New?
 in development
 ^^^^^^^^^^^^^^
 
+pydoctor 23.9.0
+^^^^^^^^^^^^^^^
+
+This is the last major release to support Python 3.6.
+
 * Do not show `**kwargs` when keywords are specifically documented with the `keyword` field
   and no specific documentation is given for the `**kwargs` entry.
 * Fix annotation resolution edge cases: names are resolved in the context of the module 
diff --git a/setup.cfg b/setup.cfg
index 1f00cc431..71ae2f469 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = pydoctor
-version = 23.4.1.dev0
+version = 23.9.0.dev0
 author = Michael Hudson-Doyle
 author_email = micahel@gmail.com
 maintainer = Maarten ter Huurne