diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 24498e8..8c6249f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,7 +19,6 @@ jobs:
         # os: ["ubuntu-latest"]
         # source: ["source"]
         python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
-        graphblas-version: ["8.2.1"]
     steps:
     - name: Checkout
       uses: actions/checkout@v4
@@ -38,19 +37,19 @@ jobs:
     - name: GraphBLAS (from conda-forge)
       if: (contains(matrix.source, 'conda-forge'))
       run: |
-        conda install graphblas=${{ matrix.graphblas-version }}
+        conda install graphblas=$(cat GB_VERSION.txt)
     - name: GraphBLAS (from source)
       if: (contains(matrix.source, 'source'))
       run: |
         # From release (does not work with beta versions)
-        GRAPHBLAS_PREFIX=${CONDA_PREFIX} bash suitesparse.sh refs/tags/${{ matrix.graphblas-version }}.0
+        GRAPHBLAS_PREFIX=${CONDA_PREFIX} bash suitesparse.sh refs/tags/$(cat GB_VERSION.txt).0
 
         # From tag
-        # curl -L https://github.com/DrTimothyAldenDavis/GraphBLAS/archive/refs/tags/v${{ matrix.graphblas-version }}.tar.gz | tar xzf -
-        # pushd GraphBLAS-${{ matrix.graphblas-version }}/build
+        # curl -L https://github.com/DrTimothyAldenDavis/GraphBLAS/archive/refs/tags/v$(cat GB_VERSION.txt).tar.gz | tar xzf -
+        # pushd GraphBLAS-$(cat GB_VERSION.txt)/build
 
         # From branch
-        # curl -L https://github.com/DrTimothyAldenDavis/GraphBLAS/tarball/${{ matrix.graphblas-version }} | tar xzf -
+        # curl -L https://github.com/DrTimothyAldenDavis/GraphBLAS/tarball/$(cat GB_VERSION.txt) | tar xzf -
         # pushd DrTim*/build
 
         # echo ${CONDA_PREFIX}
diff --git a/.github/workflows/update_graphblas.yml b/.github/workflows/update_graphblas.yml
new file mode 100644
index 0000000..b2ecb47
--- /dev/null
+++ b/.github/workflows/update_graphblas.yml
@@ -0,0 +1,61 @@
+# Checks for latest SuiteSparse:GraphBLAS version on GitHub and creates a PR to update the version used by this repo.
+name: Check for GraphBLAS updates
+
+# In addition to permissions below, must explicitly allow GitHub Actions to create pull requests.
+# This setting can be found in a repository's settings under Actions > General > Workflow permissions.
+# https://github.com/peter-evans/create-pull-request#workflow-permissions
+permissions:
+  contents: write
+  pull-requests: write
+
+on:
+  # Note: Workflow must run at least once to appear in workflows list.
+  # Push to the bot's branch to trigger workflow.
+  push:
+    branches: [ auto_update_gb_version ]
+
+  # Note: Workflow must exist in main branch for workflow dispatch option to appear
+  workflow_dispatch:
+
+  # Enable cron to check for updates once a day:
+#  schedule:
+#    - cron:  '0 0 * * *'
+
+jobs:
+  gb_version_check:
+    name: Check for GraphBLAS update
+    if: github.repository == 'GraphBLAS/python-suitesparse-graphblas' || github.repository == 'alugowski/python-suitesparse-graphblas'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "3.11"
+
+      - name: Get latest GraphBLAS version
+        run: |
+          python latest_suitesparse_graphblas_version.py > GB_VERSION.txt
+          echo "GB_VERSION=$(cat GB_VERSION.txt)" >> $GITHUB_ENV
+        shell: bash
+
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@v5
+        with:
+          # See documentation: https://github.com/peter-evans/create-pull-request
+          # Action behavior: https://github.com/peter-evans/create-pull-request#action-behaviour
+          # TL;DR: create a PR if there is a diff and keep it up to date with changes as they arrive.
+          #
+          # To trigger tests with this PR set up a Personal Access Token as in the docs above.
+#          token: ${{ secrets.PAT }}
+          add-paths: GB_VERSION.txt
+          commit-message: Update to GraphBLAS ${{ env.GB_VERSION }}
+          title: Update to SuiteSparse:GraphBLAS ${{ env.GB_VERSION }}
+          body: |
+            Auto-generated by `update_graphblas.yml`
+
+            Close then reopen this PR to trigger tests. See [here](https://github.com/peter-evans/create-pull-request/blob/main/docs/concepts-guidelines.md#triggering-further-workflow-runs) for why automatic triggers do not work.
+          branch: auto_update_gb_version
+          delete-branch: true
diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
index be6bfd8..bacc009 100644
--- a/.github/workflows/wheels.yml
+++ b/.github/workflows/wheels.yml
@@ -48,10 +48,6 @@ jobs:
   build_wheels:
     name: Wheels - ${{ matrix.cibw_archs }} ${{ matrix.arch_note}} - ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
-    env:
-      # graphblas version to use if another one is not provided
-      default-graphblas-version: "8.2.1"
-
     strategy:
       fail-fast: false
       matrix:
@@ -119,7 +115,13 @@ jobs:
         # Ask suitesparse.sh to compile in the fastest way possible and provide a GB version to build
         run: |
           echo "SUITESPARSE_FASTEST_BUILD=1" >> $GITHUB_ENV
-          echo "GB_VERSION_REF=refs/tags/${{ env.default-graphblas-version }}.0" >> $GITHUB_ENV
+        shell: bash
+
+      - name: Setup GraphBLAS version from GB_VERSION.txt
+        # Use GraphBLAS version specified in GB_VERSION.txt unless specified in a git tag (next workflow step).
+        # Git tag method required for uploads to PyPI.
+        if: github.event_name != 'release' && github.event.inputs.upload_dest != 'PyPI'
+        run: echo "GB_VERSION_REF=refs/tags/$(cat GB_VERSION.txt).0" >> $GITHUB_ENV
         shell: bash
 
       - name: Setup GraphBLAS version from git tag
diff --git a/GB_VERSION.txt b/GB_VERSION.txt
new file mode 100644
index 0000000..2b0aa21
--- /dev/null
+++ b/GB_VERSION.txt
@@ -0,0 +1 @@
+8.2.1
diff --git a/latest_suitesparse_graphblas_version.py b/latest_suitesparse_graphblas_version.py
new file mode 100644
index 0000000..dbcc310
--- /dev/null
+++ b/latest_suitesparse_graphblas_version.py
@@ -0,0 +1,27 @@
+#!/usr/bin/env python
+
+"""
+Find and print the latest version of SuiteSparse:GraphBLAS as published in this repo:
+https://github.com/DrTimothyAldenDavis/GraphBLAS
+"""
+
+import json
+from urllib.error import URLError
+from urllib.request import urlopen
+
+# fetch release data from GraphBLAS repo
+for _ in range(5):
+    try:
+        with urlopen(
+            "https://api.github.com/repos/DrTimothyAldenDavis/GraphBLAS/releases/latest"
+        ) as url:
+            latest_release = json.load(url)
+            break
+    except URLError:
+        # sleep before trying again
+        from time import sleep
+
+        sleep(1)
+
+version = latest_release["tag_name"].lstrip("v")
+print(version)