diff --git a/.github/workflows/changelog.yml b/.github/workflows/changelog.yml
index 58bdafba9b..dcd8517c96 100644
--- a/.github/workflows/changelog.yml
+++ b/.github/workflows/changelog.yml
@@ -8,7 +8,7 @@ on:
 env:
   CACHE_VERSION: 1
   KEY_PREFIX: base-venv
-  DEFAULT_PYTHON: "3.11"
+  DEFAULT_PYTHON: "3.12"
 
 permissions:
   contents: read
diff --git a/.github/workflows/primer-test.yaml b/.github/workflows/primer-test.yaml
index a378b41381..8c2a910062 100644
--- a/.github/workflows/primer-test.yaml
+++ b/.github/workflows/primer-test.yaml
@@ -30,7 +30,7 @@ jobs:
     timeout-minutes: 5
     strategy:
       matrix:
-        python-version: [3.8, 3.9, "3.10", "3.11", "3.12-dev"]
+        python-version: [3.8, 3.9, "3.10", "3.11", "3.12"]
     outputs:
       python-key: ${{ steps.generate-python-key.outputs.key }}
     steps:
@@ -72,7 +72,7 @@ jobs:
     needs: prepare-tests-linux
     strategy:
       matrix:
-        python-version: [3.8, 3.9, "3.10", "3.11", "3.12-dev"]
+        python-version: [3.8, 3.9, "3.10", "3.11", "3.12"]
     steps:
       - name: Check out code from GitHub
         uses: actions/checkout@v4.1.0
diff --git a/.github/workflows/primer_comment.yaml b/.github/workflows/primer_comment.yaml
index a5d68211b8..d959e1f1c6 100644
--- a/.github/workflows/primer_comment.yaml
+++ b/.github/workflows/primer_comment.yaml
@@ -16,7 +16,7 @@ env:
   # This needs to be the SAME as in the Main and PR job
   CACHE_VERSION: 4
   KEY_PREFIX: venv-primer
-  DEFAULT_PYTHON: "3.11"
+  DEFAULT_PYTHON: "3.12"
 
 permissions:
   contents: read
diff --git a/.github/workflows/primer_run_main.yaml b/.github/workflows/primer_run_main.yaml
index 88311e4266..623e1b0922 100644
--- a/.github/workflows/primer_run_main.yaml
+++ b/.github/workflows/primer_run_main.yaml
@@ -29,7 +29,7 @@ jobs:
     timeout-minutes: 45
     strategy:
       matrix:
-        python-version: ["3.8", "3.11"]
+        python-version: ["3.8", "3.12"]
         batches: [4]
         batchIdx: [0, 1, 2, 3]
     steps:
diff --git a/.github/workflows/primer_run_pr.yaml b/.github/workflows/primer_run_pr.yaml
index 0ea0801284..3493f45218 100644
--- a/.github/workflows/primer_run_pr.yaml
+++ b/.github/workflows/primer_run_pr.yaml
@@ -38,7 +38,7 @@ jobs:
     timeout-minutes: 45
     strategy:
       matrix:
-        python-version: ["3.8", "3.11"]
+        python-version: ["3.8", "3.12"]
         batches: [4]
         batchIdx: [0, 1, 2, 3]
     steps:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 9bd6f14738..bd15adbb1f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -6,7 +6,7 @@ on:
       - published
 
 env:
-  DEFAULT_PYTHON: "3.11"
+  DEFAULT_PYTHON: "3.12"
 
 permissions:
   contents: read
diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index e1524e403b..9e8933b8f9 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -31,7 +31,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.8, 3.9, "3.10", "3.11", "3.12-dev"]
+        python-version: [3.8, 3.9, "3.10", "3.11", "3.12"]
     outputs:
       python-key: ${{ steps.generate-python-key.outputs.key }}
     steps:
@@ -89,11 +89,11 @@ jobs:
     steps:
       - name: Check out code from GitHub
         uses: actions/checkout@v4.1.0
-      - name: Set up Python 3.11
+      - name: Set up Python 3.12
         id: python
         uses: actions/setup-python@v4.7.1
         with:
-          python-version: "3.11"
+          python-version: "3.12"
           check-latest: true
       - name: Restore Python virtual environment
         id: cache-venv
@@ -125,7 +125,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.11"]
+        python-version: ["3.12"]
     steps:
       - name: Check out code from GitHub
         uses: actions/checkout@v4.1.0
@@ -175,7 +175,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.8, 3.9, "3.10", "3.11", "3.12-dev"]
+        python-version: [3.8, 3.9, "3.10", "3.11", "3.12"]
     steps:
       - name: Set temp directory
         run: echo "TEMP=$env:USERPROFILE\AppData\Local\Temp" >> $env:GITHUB_ENV
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index d7063d58c2..a4790f380a 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -13,7 +13,7 @@ python:
 build:
   os: ubuntu-20.04
   tools:
-    python: "3.11"
+    python: "3.12"
   jobs:
     pre_build:
       - towncrier build --yes --date TBA
diff --git a/tox.ini b/tox.ini
index 5f512d2210..b3e429cc8c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 3.0
-envlist = formatting, py38, py39, py310, py311, pypy, benchmark
+envlist = formatting, py38, py39, py310, py311, py312, pypy, benchmark
 skip_missing_interpreters = true
 requires = pip >=21.3.1
 isolated_build = true