diff --git a/.github/workflows/deploy.yaml b/.github/workflows/deploy.yaml
index e6ecd149a..df7444d02 100644
--- a/.github/workflows/deploy.yaml
+++ b/.github/workflows/deploy.yaml
@@ -37,8 +37,13 @@ jobs:
           git config --global user.name $user_name
           git config --global user.email $user_email
           git remote set-url origin https://${github_token}@github.com/${repository}
+          ./stamp.sh
           npm run build
           npm run -w web deploy
+          VERSION=$(grep version package.json | awk -F\" '{print $4}')
+          git tag "$VERSION" main
+          git push "$REMOTE" "$VERSION"
+          git push "$REMOTE" main
         env:
           user_name: "github-actions[bot]"
           user_email: "github-actions[bot]@users.noreply.github.com"
diff --git a/package.json b/package.json
index ec15db6e1..956f50ff6 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@nand2tetris/web-ide",
-  "version": "0.0.0",
+  "version": "2024.49.0",
   "description": "A Javascript implementation of nand2tetris.org.",
   "repository": {
     "type": "git",
diff --git a/stamp.sh b/stamp.sh
new file mode 100755
index 000000000..70c009416
--- /dev/null
+++ b/stamp.sh
@@ -0,0 +1,42 @@
+#!/bin/sh
+
+set -e # Exit on errors
+# set -x # Shell debugging
+
+# CURRENT and NEXT have the format YYYY.WW.REV, where YYYY is the current year,
+# WW is the current week, and REV is the number of releases this week.
+# The next revision compares the two, in this way
+# - If NEXT is later than CURRENT in any fields, accept NEXT.
+# - Otherwise, return CURRENT, with one added to REV.
+#
+# THIS FUNCTION IS NOT TRANSITIVE! It must be called with
+# `compare_versions CURRENT NEXT`
+compare_versions() {
+    if [[ "$1" < "$2" ]] ; then
+        echo "$2"
+    else
+        IFS='.' read -r y1 w1 r1 <<< "$1"
+        r1=$((r1 + 1))
+        echo "${y1}.${w1}.${r1}"
+    fi
+}
+
+# compare_versions 2024.44.4 2024.44.0 # 2024.44.5
+# compare_versions 2024.44.4 2024.45.0 # 2024.45.0
+# compare_versions 2024.44.4 2025.1.0 # 2025.1.0
+
+CURRENT=$(grep version package.json | awk -F\" '{print $4}')
+NEXT=$(date +%Y.%W.0)
+VERSION=$(compare_versions "$CURRENT" "$NEXT")
+echo "Releasing $VERSION..."
+sed "/version/ s/$CURRENT/$VERSION/" package.json > package.json.out ; mv package.json.out package.json
+sed "/version/ s/$CURRENT/$VERSION/" web/public/index.html > web/public/index.html.out ; mv web/public/index.html.out web/public/index.html
+git --no-pager diff
+git add package.json
+git commit --message "Release ${VERSION}"
+
+if [ "$1" == "--release" ] ; then
+    git tag "$VERSION" main
+    git push "$REMOTE" "$VERSION"
+    git push "$REMOTE" main
+fi
\ No newline at end of file