---
title: "Nutrient 8.9 migration guide"
canonical_url: "https://www.nutrient.io/guides/android/migration-guides/pspdfkit-8-9-migration-guide/"
md_url: "https://www.nutrient.io/guides/android/migration-guides/pspdfkit-8-9-migration-guide.md"
last_updated: "2026-05-30T02:20:01.165Z"
description: "Discover the key API changes in Nutrient Android SDK 8.9, including the new SigningManager for advanced digital signatures and simplified document signing."
---

This guide provides the necessary steps for migrating from Nutrient Android SDK 8 to [Nutrient Android SDK 8.9](/guides/android/changelog.md#8.9.0).

Before updating to Nutrient Android SDK 8.9, make sure your app is running at least Nutrient Android SDK 8. If you’re running an earlier version, see our [previous migration guides](/guides/android/upgrade.md) first, which will guide you through the necessary update steps up to version 8.9.

**Steps:**

1. ## Upgrading Nutrient

   Inside your `app/build.gradle.kts` file, update the version of the `io.nutrient:nutrient` dependency to `8.9.0`:

   ```diff

   dependencies {
   -   implementation("io.nutrient:nutrient:8.8.0")
   +   implementation("io.nutrient:nutrient:8.9.0")
    }
   ```

   ### Upgrading OCR dependencies

   If your project also integrates the [Nutrient OCR library](https://www.nutrient.io/guides/android/ocr/overview.md), make sure to upgrade the version of all OCR dependencies too:

   ```diff

   dependencies {
   -   implementation("io.nutrient:nutrient-ocr:8.8.0")
   -   implementation("io.nutrient:nutrient-ocr-english:8.8.0")
   +   implementation("io.nutrient:nutrient-ocr:8.9.0")
   +   implementation("io.nutrient:nutrient-ocr-english:8.9.0")...
   }
   ```

2. ## API changes

   Nutrient Android SDK 8.9 introduces a simplified [digital signing API](https://www.nutrient.io/api/android/nutrient/com.pspdfkit.signatures/-signing-manager/index.html) designed to make it easier to add [ETSI](https://www.etsi.org/) standard [PAdES](https://en.wikipedia.org/wiki/PAdES) advanced digital signatures to your documents. There are a few breaking API changes that this version brings, so if you’re using any of the digital signature APIs, read carefully.

   From this release, `Signer` and all its child classes — like `MemorySigner` and `Pkcs12Signer` — are deprecated. Instead, use [`SigningManager`](https://www.nutrient.io/api/android/nutrient/com.pspdfkit.signatures/-signing-manager/index.html), which enables you to sign documents with ease:

   ```kotlin

   val signerOptions = SignerOptions.Builder(signatureFormField, outputFileUri).setPrivateKey(key).build()

   SigningManager.signDocument(context = context,
        signerOptions = signerOptions,
        type = digitalSignatureType,
        onFailure = {  /* Handle signing errors here..*/  },
        onSuccess = {  /* The document was successfully signed! */ }
        )
   ```
---

## Related pages

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