diff --git a/cmd/server/main.go b/cmd/server/main.go
index accaf6a..7bbcc0a 100644
--- a/cmd/server/main.go
+++ b/cmd/server/main.go
@@ -19,7 +19,7 @@ import (
 var version = "dev"
 
 func main() {
-	cfg := config.Load()
+	cfg := config.Load(version)
 
 	a, err := app.New(cfg)
 	if err != nil {
diff --git a/internal/config/config.go b/internal/config/config.go
index 6c31fbe..72aa659 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -33,9 +33,11 @@ type Config struct {
 	MailerEmailFrom string
 
 	SupportEmail string
+
+	Version string
 }
 
-func Load() *Config {
+func Load(version string) *Config {
 
 	if err := godotenv.Load(); err != nil {
 		slog.Info("no .env file found, using environment variables")
@@ -65,6 +67,8 @@ func Load() *Config {
 		MailerEmailFrom: envString("MAILER_EMAIL_FROM", ""),
 
 		SupportEmail: envString("SUPPORT_EMAIL", ""),
+
+		Version: version,
 	}
 
 	return cfg
@@ -87,6 +91,8 @@ func (c *Config) Sanitized() *Config {
 
 		MailerEmailFrom: c.MailerEmailFrom,
 		SupportEmail:    c.SupportEmail,
+
+		Version: c.Version,
 	}
 }
 
diff --git a/internal/ctxkeys/ctx.go b/internal/ctxkeys/ctx.go
index aa56624..a4d5e4c 100644
--- a/internal/ctxkeys/ctx.go
+++ b/internal/ctxkeys/ctx.go
@@ -8,11 +8,12 @@ import (
 )
 
 const (
-	UserKey      string = "user"
-	ProfileKey   string = "profile"
-	URLPathKey   string = "url_path"
-	ConfigKey    string = "config"
-	CSRFTokenKey string = "csrf_token"
+	UserKey       string = "user"
+	ProfileKey    string = "profile"
+	URLPathKey    string = "url_path"
+	ConfigKey     string = "config"
+	CSRFTokenKey  string = "csrf_token"
+	AppVersionKey string = "app_version"
 )
 
 func User(ctx context.Context) *model.User {
@@ -59,3 +60,12 @@ func CSRFToken(ctx context.Context) string {
 func WithCSRFToken(ctx context.Context, token string) context.Context {
 	return context.WithValue(ctx, CSRFTokenKey, token)
 }
+
+func AppVersion(ctx context.Context) string {
+	version, _ := ctx.Value(AppVersionKey).(string)
+	return version
+}
+
+func WithAppVersion(ctx context.Context, version string) context.Context {
+	return context.WithValue(ctx, AppVersionKey, version)
+}
diff --git a/internal/middleware/app_version.go b/internal/middleware/app_version.go
new file mode 100644
index 0000000..ad9718a
--- /dev/null
+++ b/internal/middleware/app_version.go
@@ -0,0 +1,16 @@
+package middleware
+
+import (
+	"net/http"
+
+	"git.juancwu.dev/juancwu/budgit/internal/ctxkeys"
+)
+
+func AppVersion(version string) func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			ctx := ctxkeys.WithAppVersion(r.Context(), version)
+			next.ServeHTTP(w, r.WithContext(ctx))
+		})
+	}
+}
diff --git a/internal/routes/routes.go b/internal/routes/routes.go
index b63ba9e..4a70050 100644
--- a/internal/routes/routes.go
+++ b/internal/routes/routes.go
@@ -181,6 +181,7 @@ func SetupRoutes(a *app.App) http.Handler {
 	// Global middlewares
 	handler := middleware.Chain(
 		mux,
+		middleware.AppVersion(a.Cfg.Version),
 		middleware.Config(a.Cfg),
 		middleware.RequestLogging,
 		middleware.NoCacheDynamic,
diff --git a/internal/ui/layouts/app.templ b/internal/ui/layouts/app.templ
index 416c54f..1da5be7 100644
--- a/internal/ui/layouts/app.templ
+++ b/internal/ui/layouts/app.templ
@@ -68,6 +68,9 @@ templ App(title string) {
 							}
 						}
 					}
+					<div class="px-2 py-1">
+						<span class="text-xs text-muted-foreground">App version: v{ ctxkeys.AppVersion(ctx) }</span>
+					</div>
 					@sidebar.Separator()
 					@sidebar.Menu() {
 						@sidebar.MenuItem() {
diff --git a/internal/ui/layouts/space.templ b/internal/ui/layouts/space.templ
index 8a1b34c..2ca361f 100644
--- a/internal/ui/layouts/space.templ
+++ b/internal/ui/layouts/space.templ
@@ -105,6 +105,9 @@ templ Space(title string, space *model.Space) {
 							}
 						}
 					}
+					<div class="px-2 py-1">
+						<span class="text-xs text-muted-foreground">App version: v{ ctxkeys.AppVersion(ctx) }</span>
+					</div>
 					@sidebar.Separator()
 					@sidebar.Menu() {
 						@sidebar.MenuItem() {