diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 24367c89..a7eec726 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -12,22 +12,29 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - { python: "3.10", os: "ubuntu-latest", session: "pre-commit" }
-          - { python: "3.10", os: "ubuntu-latest", session: "safety" }
+          - { python: "3.11", os: "ubuntu-latest", session: "pre-commit" }
+          - { python: "3.11", os: "ubuntu-latest", session: "safety" }
+          - { python: "3.11", os: "ubuntu-latest", session: "mypy" }
           - { python: "3.10", os: "ubuntu-latest", session: "mypy" }
           - { python: "3.9", os: "ubuntu-latest", session: "mypy" }
           - {
-              python: "3.10",
+              python: "3.11",
               os: "ubuntu-latest",
               session: "tests",
               database: "mysql",
             }
           - {
-              python: "3.10",
+              python: "3.11",
               os: "ubuntu-latest",
               session: "tests",
               database: "postgres",
             }
+          - {
+              python: "3.11",
+              os: "ubuntu-latest",
+              session: "tests",
+              database: "sqlite",
+            }
           - {
               python: "3.10",
               os: "ubuntu-latest",
@@ -41,28 +48,28 @@ jobs:
               database: "sqlite",
             }
           - {
-              python: "3.10",
+              python: "3.11",
               os: "windows-latest",
               session: "tests",
               database: "sqlite",
             }
           - {
-              python: "3.10",
+              python: "3.11",
               os: "macos-latest",
               session: "tests",
               database: "sqlite",
             }
           - {
-              # typeguard 2.13.3 is broken with TypeDict in 3.10.
+              # typeguard 2.13.3 is broken with TypeDict in 3.11.
               # probably the next release fixes it.
               # https://github.com/agronholm/typeguard/issues/242
-              python: "3.9",
+              python: "3.11",
               os: "ubuntu-latest",
               session: "typeguard",
               database: "sqlite",
             }
-          - { python: "3.10", os: "ubuntu-latest", session: "xdoctest" }
-          - { python: "3.10", os: "ubuntu-latest", session: "docs-build" }
+          - { python: "3.11", os: "ubuntu-latest", session: "xdoctest" }
+          - { python: "3.11", os: "ubuntu-latest", session: "docs-build" }
 
     env:
       NOXSESSION: ${{ matrix.session }}
@@ -149,7 +156,7 @@ jobs:
 
       - name: Upload coverage data
         # pin to upload coverage from only one matrix entry, otherwise coverage gets confused later
-        if: always() && matrix.session == 'tests' && matrix.python == '3.10' && matrix.os == 'ubuntu-latest'
+        if: always() && matrix.session == 'tests' && matrix.python == '3.11' && matrix.os == 'ubuntu-latest'
         uses: "actions/upload-artifact@v3.0.0"
         with:
           name: coverage-data
@@ -198,7 +205,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4.2.0
         with:
-          python-version: "3.10"
+          python-version: "3.11"
 
       - name: Upgrade pip
         run: |
diff --git a/noxfile.py b/noxfile.py
index 5e9f4e9a..c3f6dab1 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -21,7 +21,7 @@ except ImportError:
 
 
 package = "spiffworkflow_backend"
-python_versions = ["3.10", "3.9"]
+python_versions = ["3.11", "3.10", "3.9"]
 nox.needs_version = ">= 2021.6.6"
 nox.options.sessions = (
     "pre-commit",
@@ -96,7 +96,7 @@ def activate_virtualenv_in_precommit_hooks(session: Session) -> None:
         hook.write_text("\n".join(lines))
 
 
-@session(name="pre-commit", python="3.10")
+@session(name="pre-commit", python="3.11")
 def precommit(session: Session) -> None:
     """Lint using pre-commit."""
     args = session.posargs or ["run", "--all-files", "--show-diff-on-failure"]
@@ -119,7 +119,7 @@ def precommit(session: Session) -> None:
         activate_virtualenv_in_precommit_hooks(session)
 
 
-@session(python="3.10")
+@session(python="3.11")
 def safety(session: Session) -> None:
     """Scan dependencies for insecure packages."""
     requirements = session.poetry.export_requirements()
@@ -189,7 +189,7 @@ def xdoctest(session: Session) -> None:
     session.run("python", "-m", "xdoctest", *args)
 
 
-@session(name="docs-build", python="3.10")
+@session(name="docs-build", python="3.11")
 def docs_build(session: Session) -> None:
     """Build the documentation."""
     args = session.posargs or ["docs", "docs/_build"]
@@ -206,7 +206,7 @@ def docs_build(session: Session) -> None:
     session.run("sphinx-build", *args)
 
 
-@session(python="3.10")
+@session(python="3.11")
 def docs(session: Session) -> None:
     """Build and serve the documentation with live reloading on file changes."""
     args = session.posargs or ["--open-browser", "docs", "docs/_build"]
diff --git a/pyproject.toml b/pyproject.toml
index abb6d175..645c56ed 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,7 +16,7 @@ classifiers = [
 Changelog = "https://github.com/sartography/spiffworkflow-backend/releases"
 
 [tool.poetry.dependencies]
-python = ">=3.11,<3.12"
+python = ">=3.9,<3.12"
 click = "^8.0.1"
 flask = "2.2.2"
 flask-admin = "*"
diff --git a/sonar-project.properties b/sonar-project.properties
index cf1276ab..c684eb9a 100644
--- a/sonar-project.properties
+++ b/sonar-project.properties
@@ -1,7 +1,7 @@
 sonar.organization=sartography
 sonar.projectKey=sartography_spiffworkflow-backend
 sonar.host.url=https://sonarcloud.io
-sonar.python.version=3.9,3.10
+sonar.python.version=3.9,3.10,3.11
 sonar.python.coverage.reportPaths=coverage.xml
 sonar.test.inclusions=tests