diff --git a/.github/workflows/code-quality.yml b/.github/workflows/code-quality.yml
index 4d5925959..72a09b901 100644
--- a/.github/workflows/code-quality.yml
+++ b/.github/workflows/code-quality.yml
@@ -38,7 +38,7 @@ jobs:
             -Dsonar.projectKey=nhsdigital_dos-integration
             -Dsonar.coverage.exclusions=tests/**,**/tests/**,infrastructure,application/dos_db_handler/**,test/**,scripts/**,application/conftest.py
             -Dsonar.python.coverage.reportPaths=coverage.xml
-            -Dsonar.python.version=3.12
+            -Dsonar.python.version=3.14
             -Dsonar.exclusions=application/**/tests/**
 
   check-markdown-code-quality:
diff --git a/.github/workflows/configs/vale/styles/config/vocabularies/words/accept.txt b/.github/workflows/configs/vale/styles/config/vocabularies/words/accept.txt
index 85dd11711..871896a51 100644
--- a/.github/workflows/configs/vale/styles/config/vocabularies/words/accept.txt
+++ b/.github/workflows/configs/vale/styles/config/vocabularies/words/accept.txt
@@ -21,7 +21,7 @@ CodePipeline
 Xcode
 Tunnelblick
 // Environments
-dev
+[Dd]ev
 perf
 perf2
 nonprod
@@ -32,14 +32,20 @@ mgmt
 MGMT
 // Development/Deployment Terms
 adhoc
+rebase
+pytest
 healthcheck
-runbook
-Runbook
+[Rr]unbooks?
+Allowlist
+slack_and_infrastructure
+opening_times
+hotfixes
+automations
 undeploy
 Undeploy
+undeployed
 Onboarding
 onboarding
 // Miscellaneous
 bbbbbb
 gggggg
-[A-Z]+s
diff --git a/README.md b/README.md
index 084c40bc3..7b3d41dd6 100644
--- a/README.md
+++ b/README.md
@@ -100,7 +100,7 @@ The main components you will need for _basic_ development work, are your OS vers
 
 - A VPN Client (OpenVPN or Tunnelblick are 2 NHS Digital suggested options)
 - Git
-- Python (The project currently runs on 3.12)
+- Python (The project currently runs on Python 3.14)
 - AWS CLI
 - Docker/Podman
 
@@ -482,7 +482,7 @@ To quick update the lambdas run the following command. Note this only updates th
 
 ### Remove deployment with commit tag
 
-You can remove a dev deployment using a single command to create a tag which then runs an AWS CodeBuild project that will remove that environment
+You can remove a dev deployment using a single command to create a tag which then starts an AWS CodeBuild project that will remove that environment
 
     make tag-commit-to-destroy-environment ENVIRONMENT=[environment to destroy] COMMIT=[short commit hash]
     e.g. make tag-commit-to-destroy-environment ENVIRONMENT=ds-363 COMMIT=2bc43dd // This destroys the ds-363 dev environment
diff --git a/build/docker/lambda/Dockerfile b/build/docker/lambda/Dockerfile
index 333ad4347..e500a83a6 100644
--- a/build/docker/lambda/Dockerfile
+++ b/build/docker/lambda/Dockerfile
@@ -1,4 +1,4 @@
-FROM public.ecr.aws/lambda/python:3.12-arm64
+FROM public.ecr.aws/lambda/python:3.14-arm64
 # Update Pip
 RUN python -m pip install --upgrade pip
 # Copy Python requirements
diff --git a/build/docker/tester/Dockerfile b/build/docker/tester/Dockerfile
index 11ee89a74..115c692fd 100644
--- a/build/docker/tester/Dockerfile
+++ b/build/docker/tester/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.12
+FROM python:3.14
 # Update Pip
 RUN python -m pip install --upgrade pip
 # Copy Python requirements
diff --git a/pyproject.toml b/pyproject.toml
index 0f44a425a..446a26d8b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -135,7 +135,7 @@ line-length = 120
 # Allow unused variables when underscore-prefixed.
 lint.dummy-variable-rgx = "^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$"
 
-# Set target version to Python 3.12.
+# Set target version to Python 3.14.
 target-version = "py312"
 
 [tool.ruff.lint.per-file-ignores]
diff --git a/test/pyproject.toml b/test/pyproject.toml
index b734dba11..0665f8aec 100644
--- a/test/pyproject.toml
+++ b/test/pyproject.toml
@@ -15,8 +15,9 @@ lint.ignore = [
   "DTZ007",  # the use of `datetime.datetime.strptime()` without %z must be followed by `.replace(tzinfo=)` or `.astimezone()`
 ]
 
-# Set python version to 3.12.
-target-version = "py312"
+# Ruff currently supports up to Python 3.13; use py313 as target until py314 is released upstream.
+# (Runtime may be 3.14; this setting only affects linting's syntax features.)
+target-version = "py313"
 
 [tool.ruff.lint.per-file-ignores]
 "**test_*.py" = ["S101"] # Allow `assert` in tests.