diff --git a/packages/app/main.go b/packages/app/main.go
index 4804c650..7665514c 100644
--- a/packages/app/main.go
+++ b/packages/app/main.go
@@ -34,6 +34,7 @@ func main() {
 	l := do.MustInvoke[*logger.Logger](i)
 
 	do.ProvideNamedValue(i, coreUtil.ServiceAppVersion, util.AppVersion)
+	do.ProvideNamedValue(i, coreUtil.ServiceAppBuildNumber, util.AppBuildNumber)
 
 	do.ProvideValue(i, langTag)
 	do.ProvideValue(i, p)
diff --git a/packages/app/util/const.go b/packages/app/util/const.go
index 421fa349..aa859d27 100644
--- a/packages/app/util/const.go
+++ b/packages/app/util/const.go
@@ -1,3 +1,6 @@
 package util
 
-var AppVersion = "0.0.0"
+var (
+	AppVersion     = "0.0.0"
+	AppBuildNumber = "0"
+)
diff --git a/packages/build/tasks/build/compile.ts b/packages/build/tasks/build/compile.ts
index 27d9a34f..e66ec63a 100644
--- a/packages/build/tasks/build/compile.ts
+++ b/packages/build/tasks/build/compile.ts
@@ -1,5 +1,5 @@
 import { parallel, series } from 'gulp'
-import { koiVersion } from '../../utils/config'
+import { koiBuildNumber, koiVersion } from '../../utils/config'
 import { Exceptions } from '../../utils/exceptions'
 import { dir } from '../../utils/path'
 import { exec } from '../../utils/spawn'
@@ -16,7 +16,9 @@ export const compileAppDebug = () =>
       '-o',
       dir('buildPortable', process.platform === 'win32' ? 'koi.exe' : 'koi'),
       '-ldflags',
-      `-X gopkg.ilharper.com/koi/app/util.AppVersion=${koiVersion.slice(1)}`,
+      `-X gopkg.ilharper.com/koi/app/util.AppVersion=${koiVersion.slice(
+        1
+      )} -X gopkg.ilharper.com/koi/app/util.AppBuildNumber=${koiBuildNumber}`,
     ],
     dir('src')
   )
@@ -32,7 +34,7 @@ export const compileAppRelease = () =>
       '-ldflags',
       `-w -s -X gopkg.ilharper.com/koi/app/util.AppVersion=${koiVersion.slice(
         1
-      )}`,
+      )} -X gopkg.ilharper.com/koi/app/util.AppBuildNumber=${koiBuildNumber}`,
     ],
     dir('src')
   )
diff --git a/packages/build/utils/config.ts b/packages/build/utils/config.ts
index 42ee9dc5..1b87363d 100644
--- a/packages/build/utils/config.ts
+++ b/packages/build/utils/config.ts
@@ -24,6 +24,16 @@ const buildKoiVersion = () => {
 
 export const koiVersion = buildKoiVersion()
 
+const buildKoiBuildNumber = () => {
+  try {
+    return spawnSyncOutput('git', ['rev-list', '--count', 'HEAD']).trim()
+  } catch (error) {
+    return '0'
+  }
+}
+
+export const koiBuildNumber = buildKoiBuildNumber()
+
 const buildKoiSemver = () => {
   const spl = koiVersion.split('-')
   const build = spl.length > 1 ? Number(spl[1]) : 0
diff --git a/packages/core/proc/env.go b/packages/core/proc/env.go
index e178bb12..7919af85 100644
--- a/packages/core/proc/env.go
+++ b/packages/core/proc/env.go
@@ -16,6 +16,7 @@ import (
 func environ(i *do.Injector, path string) *[]string {
 	cfg := do.MustInvoke[*koiconfig.Config](i)
 	appVersion := do.MustInvokeNamed[string](i, util.ServiceAppVersion)
+	appBuildNumber := do.MustInvokeNamed[string](i, util.ServiceAppBuildNumber)
 
 	env := os.Environ()
 
@@ -75,6 +76,8 @@ func environ(i *do.Injector, path string) *[]string {
 	env = append(env, "PATH="+pathEnv)
 
 	envutil.UseEnv(&env, "KOISHI_AGENT", fmt.Sprintf("Koishi Desktop/%s", appVersion))
+	envutil.UseEnv(&env, "KOI_APP_VERSION", appVersion)
+	envutil.UseEnv(&env, "KOI_APP_BUILD_NUMBER", appBuildNumber)
 	envutil.UseColorEnv(&env)
 	koiconfig.UseConfigEnv(&env, cfg)
 
diff --git a/packages/core/util/const.go b/packages/core/util/const.go
index 8d7575a8..701adc5a 100644
--- a/packages/core/util/const.go
+++ b/packages/core/util/const.go
@@ -1,6 +1,7 @@
 package util
 
 const (
-	ServiceAppVersion = "gopkg.ilharper.com/koi/app/util.AppVersion"
-	ServiceExecutable = "gopkg.ilharper.com/koi/app/util.Executable"
+	ServiceAppVersion     = "gopkg.ilharper.com/koi/app/util.AppVersion"
+	ServiceAppBuildNumber = "gopkg.ilharper.com/koi/app/util.AppBuildNumber"
+	ServiceExecutable     = "gopkg.ilharper.com/koi/app/util.Executable"
 )