diff --git a/.github/workflows/ci_docs.yml b/.github/workflows/ci_docs.yml
index 34ad8936a59..c42291b667f 100644
--- a/.github/workflows/ci_docs.yml
+++ b/.github/workflows/ci_docs.yml
@@ -23,12 +23,12 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.10']
+        python-version: ['3.11']
         os: [ubuntu-latest, macOS-latest, windows-latest]
         # Is it a draft Pull Request (true or false)?
         isDraft:
           - ${{ github.event.pull_request.draft }}
-        # Only run one job (Ubuntu + Python 3.10) for draft PRs
+        # Only run one job (Ubuntu + Python 3.11) for draft PRs
         exclude:
           - os: macOS-latest
             isDraft: true
diff --git a/.github/workflows/ci_tests.yaml b/.github/workflows/ci_tests.yaml
index a6a50dfa554..4a980ee0565 100644
--- a/.github/workflows/ci_tests.yaml
+++ b/.github/workflows/ci_tests.yaml
@@ -28,24 +28,24 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.8', '3.10']
+        python-version: ['3.8', '3.11']
         os: [ubuntu-latest, macOS-latest, windows-latest]
         # Is it a draft Pull Request (true or false)?
         isDraft:
           - ${{ github.event.pull_request.draft }}
-        # Only run two jobs (Ubuntu + Python 3.8/3.10) for draft PRs
+        # Only run two jobs (Ubuntu + Python 3.8/3.11) for draft PRs
         exclude:
           - os: macOS-latest
             isDraft: true
           - os: windows-latest
             isDraft: true
-        # Pair Python 3.8 with NumPy 1.21 and Python 3.10 with NumPy 1.24
-        # Only install optional packages on Python 3.10/NumPy 1.24
+        # Pair Python 3.8 with NumPy 1.21 and Python 3.11 with NumPy 1.24
+        # Only install optional packages on Python 3.11/NumPy 1.24
         include:
           - python-version: '3.8'
             numpy-version: '1.21'
             optional-packages: ''
-          - python-version: '3.10'
+          - python-version: '3.11'
             numpy-version: '1.24'
             optional-packages: 'geopandas ipython'
     timeout-minutes: 30
diff --git a/.github/workflows/ci_tests_dev.yaml b/.github/workflows/ci_tests_dev.yaml
index 5492a63e16a..3025aae5089 100644
--- a/.github/workflows/ci_tests_dev.yaml
+++ b/.github/workflows/ci_tests_dev.yaml
@@ -27,7 +27,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.10']
+        python-version: ['3.11']
         os: [ubuntu-22.04, macOS-12, windows-2022]
         gmt_git_ref: [master]
     timeout-minutes: 30
diff --git a/.github/workflows/format-command.yml b/.github/workflows/format-command.yml
index 0525d2aadf7..f36dbbe1343 100644
--- a/.github/workflows/format-command.yml
+++ b/.github/workflows/format-command.yml
@@ -23,7 +23,7 @@ jobs:
       # Setup Python environment
       - uses: actions/setup-python@v4.3.1
         with:
-          python-version: '3.10'
+          python-version: '3.11'
 
       # Install formatting tools
       - name: Install formatting tools
diff --git a/.github/workflows/publish-to-pypi.yml b/.github/workflows/publish-to-pypi.yml
index f298f5abaf9..43a554d5fca 100644
--- a/.github/workflows/publish-to-pypi.yml
+++ b/.github/workflows/publish-to-pypi.yml
@@ -31,7 +31,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v4.3.1
       with:
-        python-version: '3.10'
+        python-version: '3.11'
 
     - name: Install dependencies
       run: python -m pip install build
diff --git a/.github/workflows/style_checks.yaml b/.github/workflows/style_checks.yaml
index dfc8d6de25f..3b6485f4e95 100644
--- a/.github/workflows/style_checks.yaml
+++ b/.github/workflows/style_checks.yaml
@@ -22,7 +22,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4.3.1
         with:
-          python-version: '3.10'
+          python-version: '3.11'
 
       - name: Install packages
         run: |
diff --git a/pyproject.toml b/pyproject.toml
index 9349497cf98..efc9bc848c0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,6 +20,7 @@ classifiers = [
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
     "License :: OSI Approved :: BSD License",
 ]
 dependencies = [