diff --git a/.github/workflows/bandit.yml b/.github/workflows/bandit.yml
deleted file mode 100644
index 5b8f821..0000000
--- a/.github/workflows/bandit.yml
+++ /dev/null
@@ -1,52 +0,0 @@
-# This workflow uses actions that are not certified by GitHub.
-# They are provided by a third-party and are governed by
-# separate terms of service, privacy policy, and support
-# documentation.
-
-# Bandit is a security linter designed to find common security issues in Python code.
-# This action will run Bandit on your codebase.
-# The results of the scan will be found under the Security tab of your repository.
-
-# https://github.com/marketplace/actions/bandit-scan is ISC licensed, by abirismyname
-# https://pypi.org/project/bandit/ is Apache v2.0 licensed, by PyCQA
-
-name: Bandit
-on:
-  push:
-    branches: [ "main" ]
-  pull_request:
-    # The branches below must be a subset of the branches above
-    branches: [ "main" ]
-  schedule:
-    - cron: '38 2 * * 4'
-
-jobs:
-  bandit:
-    permissions:
-      contents: read # for actions/checkout to fetch code
-      security-events: write # for github/codeql-action/upload-sarif to upload SARIF results
-      actions: read # only required for a private repository by github/codeql-action/upload-sarif to get the Action run status
-
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - name: Bandit Scan
-        uses: shundor/python-bandit-scan@9cc5aa4a006482b8a7f91134412df6772dbda22c
-        with: # optional arguments
-          # exit with 0, even with results found
-          exit_zero: true # optional, default is DEFAULT
-          # Github token of the repository (automatically created by Github)
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # Needed to get PR information.
-          # File or directory to run bandit on
-          # path: # optional, default is .
-          # Report only issues of a given severity level or higher. Can be LOW, MEDIUM or HIGH. Default is UNDEFINED (everything)
-          # level: # optional, default is UNDEFINED
-          # Report only issues of a given confidence level or higher. Can be LOW, MEDIUM or HIGH. Default is UNDEFINED (everything)
-          # confidence: # optional, default is UNDEFINED
-          # comma-separated list of paths (glob patterns supported) to exclude from scan (note that these are in addition to the excluded paths provided in the config file) (default: .svn,CVS,.bzr,.hg,.git,__pycache__,.tox,.eggs,*.egg)
-          # excluded_paths: # optional, default is DEFAULT
-          # comma-separated list of test IDs to skip
-          # skips: # optional, default is DEFAULT
-          # path to a .bandit file that supplies command line arguments
-          # ini_path: # optional, default is DEFAULT
-
diff --git a/.github/workflows/python-testing.yml b/.github/workflows/python-testing.yml
index 1e77ef6..fb62512 100644
--- a/.github/workflows/python-testing.yml
+++ b/.github/workflows/python-testing.yml
@@ -28,14 +28,11 @@ jobs:
       run: |
         git submodule update --init --recursive
         python -m pip install --upgrade pip
-        pip install flake8
+        pip install ruff
         if (Test-Path requirements.txt) {pip install -r requirements.txt}
-    - name: Lint with flake8
+    - name: Lint with Ruff
       run: |
-        # stop the build if there are Python syntax errors or undefined names
-        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
-        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
-        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+        ruff check .
 
   windows-test:
     runs-on: windows-latest
diff --git a/pyproject.toml b/pyproject.toml
index b894710..0869215 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,6 +27,9 @@ dynamic = ["dependencies"]
 "Repository" = "https://github.com/howroyd/simonsays"
 "Bug Tracker" = "https://github.com/howroyd/simonsays/issues"
 
+[project.optional-dependencies]
+dev = ["ruff"]
+
 [tool.setuptools.packages.find]
 where = ["src", "tests"]