diff --git a/main.go b/main.go
index 0bb8104..1abf563 100644
--- a/main.go
+++ b/main.go
@@ -272,22 +272,63 @@ func updateROMCache() {
 }
 
 // http - GET /
-// The LineageOS updater app needs a JSON array of type LineageOSROM
-// Marshals romCache.ROMs to JSON to serve as the response body
+// The LineageOS updater app needs a JSON array of v2 builds
+// Marshals romCache.ROMs to V2 JSON format to serve as the response body
 func lineageOSROMListHandler(w http.ResponseWriter, r *http.Request) {
 	checkNewBuilds()
 
 	romCache.RLock()
-	httpResponseJSON := &HTTPResponseJSON{Response: romCache.ROMs}
-	romCache.RUnlock()
+	defer romCache.RUnlock()
 
-	b, err := json.Marshal(httpResponseJSON)
+	var builds []V2BuildResponse
+
+	for _, rom := range romCache.ROMs {
+		relPath := rom.Filename
+		if strings.Contains(rom.URL, "/public/") {
+			parts := strings.SplitN(rom.URL, "/public/", 2)
+			if len(parts) == 2 {
+				relPath = parts[1]
+			}
+		}
+
+		file := V2BuildFile{
+			Date:             rom.Date,
+			Datetime:         int64(rom.Datetime),
+			Filename:         rom.Filename,
+			Filepath:         "/public/" + relPath,
+			OSPatchLevel:     rom.OSPatchLevel,
+			OSSDKLevel:       rom.OSSDKLevel,
+			OTAPropertyFiles: rom.OTAPropertyFiles,
+			SHA1:             rom.SHA1,
+			SHA256:           rom.SHA256,
+			Size:             int64(rom.Size),
+			Type:             strings.ToLower(rom.Romtype),
+			URL:              rom.URL,
+		}
+
+		build := V2BuildResponse{
+			Date:     rom.Date,
+			Datetime: int64(rom.Datetime),
+			Files:    []V2BuildFile{file},
+			Type:     strings.ToLower(rom.Romtype),
+			Version:  rom.Version,
+		}
+
+		builds = append(builds, build)
+	}
+
+	if builds == nil {
+		builds = []V2BuildResponse{}
+	}
+
+	b, err := json.Marshal(builds)
 	if err != nil {
 		w.WriteHeader(http.StatusInternalServerError)
-		log.Printf("failed to marshal lineageOSROMs to json: %v", err)
+		log.Printf("failed to marshal v2 builds to json: %v", err)
 		return
 	}
 
+	w.Header().Set("Content-Type", "application/json")
 	w.Write(b)
 }