diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/mod/curse/CurseInstallTask.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/mod/curse/CurseInstallTask.java
index 320fedc74..7c5e4cee0 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/mod/curse/CurseInstallTask.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/mod/curse/CurseInstallTask.java
@@ -138,6 +138,6 @@ public final class CurseInstallTask extends Task<Void> {
 
         Path root = repository.getVersionRoot(name).toPath();
         Files.createDirectories(root);
-        JsonUtils.writeToJsonFile(root.resolve("manifest.json"), JsonUtils.GSON.toJson(manifest));
+        JsonUtils.writeToJsonFile(root.resolve("manifest.json"), manifest);
     }
 }