diff --git a/backend/src/config/validate.ts b/backend/src/config/validate.ts
index 39b6901..c92bc23 100644
--- a/backend/src/config/validate.ts
+++ b/backend/src/config/validate.ts
@@ -72,7 +72,7 @@ class EnvironmentVariables {
     @IsNotEmpty()
     @IsNumber()
     @Min(1)
-    @Max(10 * 1024 * 1024) // 10MB
+    @Max(50 * 1024 * 1024) // 50MB
     MULTER_PRODUCT_THUMB_MAX_FILE_BYTES: number;
 
     @IsNotEmpty()