diff --git a/cmd/internal/update_apple_version/main.go b/cmd/internal/update_apple_version/main.go
index e6be8442..c365c051 100644
--- a/cmd/internal/update_apple_version/main.go
+++ b/cmd/internal/update_apple_version/main.go
@@ -8,6 +8,7 @@ import (
 	"strings"
 
 	"github.com/sagernet/sing-box/cmd/internal/build_shared"
+	"github.com/sagernet/sing-box/common/badversion"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing/common"
 
@@ -76,11 +77,20 @@ func findAndReplace(objectsMap map[string]any, projectContent string, bundleIDLi
 			continue
 		}
 		updated = true
-		projectContent = projectContent[:versionStart] + "\"" + newVersion + "\"" + projectContent[versionEnd:]
+		projectContent = projectContent[:versionStart] + formatProjectVersion(newVersion) + projectContent[versionEnd:]
 	}
 	return projectContent, updated
 }
 
+// Xcode serializes a version without quotes unless it contains a pre-release
+// part; always quoting makes Xcode rewrite the value on the next save.
+func formatProjectVersion(version string) string {
+	if badversion.Parse(version).PreReleaseIdentifier == "" {
+		return version
+	}
+	return "\"" + version + "\""
+}
+
 func findAndReplaceProjectVersion(objectsMap map[string]any, projectContent string, directoryList []string, newVersion string) (string, bool) {
 	objectKeyList := findObjectKeyByDirectory(objectsMap, directoryList)
 	var updated bool