diff --git a/.github/workflows/check-code.yml b/.github/workflows/check-code.yml
index bcca6ee4..6f7f36b6 100644
--- a/.github/workflows/check-code.yml
+++ b/.github/workflows/check-code.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.9.x", "3.10.x", "3.11.x", "3.12.x", "3.13.x"]
+        python-version: ["3.10.x", "3.11.x", "3.12.x", "3.13.x"]
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
diff --git a/.github/workflows/check-imports.yml b/.github/workflows/check-imports.yml
index 8d9a4ae9..0dffe444 100644
--- a/.github/workflows/check-imports.yml
+++ b/.github/workflows/check-imports.yml
@@ -32,11 +32,11 @@ jobs:
       - name: Check out Repository
         uses: actions/checkout@v4
       
-      # We now test with Python 3.10
+      # We test with Python 3.12
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.10.9'
+          python-version: '3.12.8'
 
       # Runs a set of commands using the runners shell
       - name: Set up Path
diff --git a/.github/workflows/check-notebooks.yml b/.github/workflows/check-notebooks.yml
index 9ee8ca3d..a2e0ce00 100644
--- a/.github/workflows/check-notebooks.yml
+++ b/.github/workflows/check-notebooks.yml
@@ -32,11 +32,11 @@ jobs:
       - name: Check out Repository
         uses: actions/checkout@v4
       
-      # We now test with Python 3.10
+      # We now test with Python 3.12
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.10.9'
+          python-version: '3.12.8'
 
       # Runs a set of commands using the runners shell
       - name: Set up Path
diff --git a/.github/workflows/check-types.yml b/.github/workflows/check-types.yml
index ac2b9287..146bac07 100644
--- a/.github/workflows/check-types.yml
+++ b/.github/workflows/check-types.yml
@@ -32,11 +32,11 @@ jobs:
       - name: Check out Repository
         uses: actions/checkout@v4
       
-      # We now test with Python 3.10
+      # We now test with Python 3.12
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.10.9'
+          python-version: '3.12.8'
 
       # Runs a set of commands using the runners shell
       - name: Set up Path
diff --git a/notebooks/ReleaseNotes.ipynb b/notebooks/ReleaseNotes.ipynb
index 1bbd9dde..58095862 100644
--- a/notebooks/ReleaseNotes.ipynb
+++ b/notebooks/ReleaseNotes.ipynb
@@ -23,7 +23,11 @@
     "## Current Version (in progress)\n",
     "\n",
     "This is the version we are preparing for the next release (e.g. what you get when you check out the latest version from [the GitHub repo](__GITHUB_HTML__)).\n",
-    "Major changes will show up here as we make them."
+    "Major changes will show up here as we make them.\n",
+    "\n",
+    "* New chapter on [Learning from Failures](Alhazen.ipynb), joining machine learning and debugging\n",
+    "* Updates to `requirements.txt`, using the latest and greatest third-party modules\n",
+    "* Python 3.9 is no longer supported."
    ]
   },
   {