---
title: "Nutrient 2024.1 migration guide"
canonical_url: "https://www.nutrient.io/guides/android/migration-guides/pspdfkit-2024-1-migration-guide/"
md_url: "https://www.nutrient.io/guides/android/migration-guides/pspdfkit-2024-1-migration-guide.md"
last_updated: "2026-05-21T11:22:21.505Z"
description: "Migration guide for Nutrient Android SDK version 2024.1 with breaking changes, API updates, and upgrade instructions."
---

## Versioning

We’ve changed our versioning system from semantic versioning to `yyyy.version.patch`:

- `yyyy` — The year in which the version was released (e.g. 2024).

- `version` — The version number for this year, beginning with `1` and incrementing by `1` for each non-patch release.

- `patch` — The patch number for this version.

## Digital signatures

### API change

[`SignerOptions#privateKey`](https://www.nutrient.io/api/android/nutrient/com.pspdfkit.signatures/-signer-options/private-key.html) has changed to a [`PrivateKey`](https://developer.android.com/reference/java/security/PrivateKey) type, and `privateKey` has been moved to [`privateKeyEntry`](https://www.nutrient.io/api/android/nutrient/com.pspdfkit.signatures/-signer-options/private-key-entry.html).

Trusted certificates are now added using the [`TrustedKeyStore`](https://www.nutrient.io/api/android/nutrient/com.pspdfkit.signatures/-trusted-key-store/index.html) object class instead of the deprecated `SignatureManger#addTrustedCertificate` method.
---

## Related pages

- [10 3 Migration Guide](/guides/android/migration-guides/10-3-migration-guide.md)
- [10 4 Migration Guide](/guides/android/migration-guides/10-4-migration-guide.md)
- [10 5 Migration Guide](/guides/android/migration-guides/10-5-migration-guide.md)
- [2024 9 Migration Guide](/guides/android/migration-guides/2024-9-migration-guide.md)
- [2024 8 Migration Guide](/guides/android/migration-guides/2024-8-migration-guide.md)
- [Migrate to electronic signatures](/guides/android/migration-guides/migrating-to-electronic-signatures.md)
- [Nutrient 10 Migration Guide](/guides/android/migration-guides/nutrient-10-migration-guide.md)
- [Pspdfkit 2 1 Migration Guide](/guides/android/migration-guides/pspdfkit-2-1-migration-guide.md)
- [Pspdfkit 2024 4 Migration Guide](/guides/android/migration-guides/pspdfkit-2024-4-migration-guide.md)
- [Pspdfkit 2024 2 Migration Guide](/guides/android/migration-guides/pspdfkit-2024-2-migration-guide.md)
- [Pspdfkit 2024 3 Migration Guide](/guides/android/migration-guides/pspdfkit-2024-3-migration-guide.md)
- [Pspdfkit 2024 6 Migration Guide](/guides/android/migration-guides/pspdfkit-2024-6-migration-guide.md)
- [Pspdfkit 2024 7 Migration Guide](/guides/android/migration-guides/pspdfkit-2024-7-migration-guide.md)
- [Pspdfkit 4 4 Migration Guide](/guides/android/migration-guides/pspdfkit-4-4-migration-guide.md)
- [Pspdfkit 3 1 Migration Guide](/guides/android/migration-guides/pspdfkit-3-1-migration-guide.md)
- [Pspdfkit 5 1 Migration Guide](/guides/android/migration-guides/pspdfkit-5-1-migration-guide.md)
- [Migrate to Nutrient 3.0 with ease](/guides/android/migration-guides/pspdfkit-3-migration-guide.md)
- [Pspdfkit 5 3 Migration Guide](/guides/android/migration-guides/pspdfkit-5-3-migration-guide.md)
- [Pspdfkit 5 5 Migration Guide](/guides/android/migration-guides/pspdfkit-5-5-migration-guide.md)
- [Pspdfkit 5 2 Migration Guide](/guides/android/migration-guides/pspdfkit-5-2-migration-guide.md)
- [Migration guide for Android SDK 4 features](/guides/android/migration-guides/pspdfkit-4-migration-guide.md)
- [Pspdfkit 6 2 Migration Guide](/guides/android/migration-guides/pspdfkit-6-2-migration-guide.md)
- [Pspdfkit 6 3 Migration Guide](/guides/android/migration-guides/pspdfkit-6-3-migration-guide.md)
- [Pspdfkit 6 1 Migration Guide](/guides/android/migration-guides/pspdfkit-6-1-migration-guide.md)
- [Pspdfkit 6 6 Migration Guide](/guides/android/migration-guides/pspdfkit-6-6-migration-guide.md)
- [Pspdfkit 5 Migration Guide](/guides/android/migration-guides/pspdfkit-5-migration-guide.md)
- [Pspdfkit 6 4 Migration Guide](/guides/android/migration-guides/pspdfkit-6-4-migration-guide.md)
- [Pspdfkit 7 Migration Guide](/guides/android/migration-guides/pspdfkit-7-migration-guide.md)
- [Pspdfkit 8 7 Migration Guide](/guides/android/migration-guides/pspdfkit-8-7-migration-guide.md)
- [Pspdfkit 8 6 Migration Guide](/guides/android/migration-guides/pspdfkit-8-6-migration-guide.md)
- [Pspdfkit 8 9 Migration Guide](/guides/android/migration-guides/pspdfkit-8-9-migration-guide.md)
- [Pspdfkit 6 Migration Guide](/guides/android/migration-guides/pspdfkit-6-migration-guide.md)
- [Pspdfkit 8 8 Migration Guide](/guides/android/migration-guides/pspdfkit-8-8-migration-guide.md)
- [Pspdfkit 8 Migration Guide](/guides/android/migration-guides/pspdfkit-8-migration-guide.md)
- [Upgrading](/guides/android/advanced-integration/upgrading.md)