diff --git a/.github/workflows/version.yml b/.github/workflows/version.yml
new file mode 100644
index 0000000000..237ee58312
--- /dev/null
+++ b/.github/workflows/version.yml
@@ -0,0 +1,15 @@
+on: release 
+jobs:
+  add-dev-to-version:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3 
+    - name: Append version with dev
+      run: sed -i '/20[0-9][0-9]\.[0-9][0-9]/ s/]/-dev]/' configure.ac 
+    - name: Create pull request
+      uses: peter-evans/create-pull-request@v4 
+      with:
+        base: main                   # creates a new branch off of main
+        branch: add-dev-post-release # name of the created branch
+        branch-suffix: timestamp     # add a timestamp to branch name
+        delete-branch: true          # delete afer merge 
diff --git a/configure.ac b/configure.ac
index 2a4c15f1e7..b0b8bb309d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -25,7 +25,7 @@ AC_PREREQ([2.69])
 
 # Initialize with name, version, and support email address.
 AC_INIT([GFDL FMS Library],
-  [2022.04.00],
+  [2022.04.00-dev],
   [gfdl.climate.model.info@noaa.gov],
   [FMS],
   [https://www.github.com/NOAA-GFDL/FMS])