# Android: Certificate Validation Error

If you get the "Trust anchor for certification path not found" exception thrown by Oz Android SDK, your certificate might seem invalid to it. Please contact us and update your SDK version according to our recommendations.

<table><thead><tr><th width="275"></th><th></th></tr></thead><tbody><tr><td><strong>Certificate</strong></td><td><strong>Minimal Android SDK version that supports this certificate</strong></td></tr><tr><td>Let's Encrypt ISRG Root X1</td><td>7.1.2</td></tr></tbody></table>


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