---
title: "Nutrient 8.6 migration guide"
canonical_url: "https://www.nutrient.io/guides/android/migration-guides/pspdfkit-8-6-migration-guide/"
md_url: "https://www.nutrient.io/guides/android/migration-guides/pspdfkit-8-6-migration-guide.md"
last_updated: "2026-05-21T11:22:21.505Z"
description: "Migration guide for Nutrient Android SDK version 8.6 with breaking changes, API updates, and upgrade instructions."
---

This guide provides the necessary steps for migrating from Nutrient Android SDK 8 to [Nutrient Android SDK 8.6](/guides/android/changelog.md#8.6.0).

Before updating to Nutrient Android SDK 8.6, 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 8.6.

**Steps:**

1. ## Upgrading Nutrient

   Inside your `app/build.gradle.kts` file, update the version of the `io.nutrient:nutrient` dependency to `8.6.0`:

   ```diff

   dependencies {
   -   implementation("io.nutrient:nutrient:8.5.1")
   +   implementation("io.nutrient:nutrient:8.6.0")
    }
   ```

   ### 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:8.5.1")
   -   implementation("io.nutrient:nutrient-ocr-english:8.5.1")
   +   implementation("io.nutrient:nutrient-ocr:8.6.0")
   +   implementation("io.nutrient:nutrient-ocr-english:8.6.0")...
   }
   ```

2. ## RxJava 2 to RxJava 3

   Nutrient Android SDK 8.6 upgrades [ReactiveX Java](https://github.com/ReactiveX/RxJava) from major version 2 to 3 (specifically 3.1.6).

   This means users who make use of our asynchronous APIs need to change their imports, replacing `import io.reactivex.` with `import io.reactivex.rxjava3` where applicable.

   For more details on migrating to RxJava 3, see the [official migration guide](https://github.com/ReactiveX/RxJava/wiki/What's-different-in-3.0).

3. ## Deprecated symbols removed

   Nutrient Android SDK 8.6 removes the following APIs that were deprecated in previous versions:

   - `SignatureFormElement#getOverlappingInkSignature`, which was replaced by [`SignatureFormElement#getOverlappingSignature`](https://www.nutrient.io/api/android/nutrient/com.pspdfkit.forms/-signature-form-element/get-overlapping-signature.html).

   - The legacy `PKCS7` and `PKCS7SignatureContents` constructors, which have been replaced by constructors that use `FilterSubtype`:
     - `PKCS7#create`

     - `PKCS7SignatureContents`-`byte` and `PKCS7SignatureContents`-`SignatureFormField`
   - `PdfThumbnailGrid#setOnDocumentSavedListener`, which was replaced by [`addOnDocumentSavedListener(OnDocumentSavedListener)`](https://www.nutrient.io/api/android/nutrient/com.pspdfkit.ui/-pdf-thumbnail-grid/add-on-document-saved-listener.html).

   - `PdfDrawable#getPDFToPageTransformation` and `PdfDrawable#updatePDFToViewTransformation`, which were replaced by [`getPdfToPageTransformation`](https://www.nutrient.io/api/android/nutrient/com.pspdfkit.ui.drawable/-pdf-drawable/update-pdf-to-view-transformation.html) and [`updatePdfToViewTransformation`](https://www.nutrient.io/api/android/nutrient/com.pspdfkit.ui.drawable/-pdf-drawable/update-pdf-to-view-transformation.html).
---

## 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 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 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 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)