diff --git a/.github/workflows/bm_version.yml b/.github/workflows/bm_version.yml
new file mode 100644
index 0000000..eb22f04
--- /dev/null
+++ b/.github/workflows/bm_version.yml
@@ -0,0 +1,33 @@
+name: bm version CI
+
+on:
+  push:
+    paths:
+      - bucket_manager/**
+
+jobs:
+
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: get bm version
+      run: |
+        grep "version" csd3-echo-somerville/setup.py | awk -F\' '{print $2}' | awk -F\- '{print $1}' > version.txt
+    - name: set bm version
+      run: |
+        bm_version=$(cat version.txt)
+        git_hash=$(git rev-parse --short "$GITHUB_SHA")
+        sed -i "s/version.*/version='${bm_version}-dev-${git_hash}'/" csd3-echo-somerville/setup.py
+    - name: commit bm version CI
+      run: |
+        git config --global user.name "github-actions[bot]"
+        git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
+
+        git add csd3-echo-somerville/setup.py
+        git commit -m "bm version: updated to ${bm_version}-dev-${git_hash}"
+    - name: push bm version CI
+      run: |
+        git push