diff --git a/build.sh b/build.sh
index e66c56b..2ef1198 100755
--- a/build.sh
+++ b/build.sh
@@ -3,4 +3,5 @@ set -e
 rm -rf out proxy-settings.crx
 npx tsc
 cp manifest.json ./*.html out
+sed "s/{{DATE}}/$(date -u "+%Y.%m.%d")/" -i out/manifest.json
 npx crx3 -p key.pem -o proxy-settings.crx out
diff --git a/manifest.json b/manifest.json
index 77f1b67..393b4b2 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,7 +1,7 @@
 {
   "manifest_version": 3,
   "name": "Proxy Settings",
-  "version": "0.0.1",
+  "version": "{{DATE}}",
   "action": {
     "default_popup": "options.html"
   },
diff --git a/package-lock.json b/package-lock.json
index 371bd6d..eb512fc 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6,7 +6,6 @@
   "packages": {
     "": {
       "name": "chromium-proxy-settings",
-      "version": "0.0.1",
       "devDependencies": {
         "@types/chrome": "^0.0.260",
         "crx3": "^1.1.3",
diff --git a/package.json b/package.json
index f2bfd38..7b52ee8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,5 @@
 {
   "name": "chromium-proxy-settings",
-  "version": "0.0.1",
   "type": "module",
   "devDependencies": {
     "@types/chrome": "^0.0.260",