# Deprecation of Coralogix Log4j SDK

**Published**: February 16, 2026

**Effective**: June 30, 2026

## Deprecation notice

Coralogix will deprecate the [Coralogix Log4j SDK](https://coralogix.com/docs/integrations/sdks/log4j/index.md) on June 30, 2026.

Coralogix Log4j libraries are deprecated in favor of [OpenTelemetry logging for Java](https://coralogix.com/docs/opentelemetry/instrumentation-options/java-opentelemetry-instrumentation/index.md), which is now the recommended and supported approach for exporting logs and correlating them with traces to Coralogix.

Action is required to ensure continued support and compatibility.

## Why this is happening

OpenTelemetry provides a standardized approach for logs, metrics, and traces, including support for bridging logs from common logging frameworks into the OpenTelemetry data model.

## What’s affected

Coralogix Log4j appender libraries for Log4j 1.x and Log4j 2.x are being deprecated.

These libraries may currently be used in:

- Java services using Log4j where Coralogix appenders are configured in Log4j configuration files
- Applications that configure Coralogix-specific credentials inside Log4j appender configuration
- Build pipelines that package Coralogix Log4j appender dependencies

After the effective date, these SDKs will no longer be supported or maintained.

## What you need to do

### Migrate to OpenTelemetry logging for Log4j

Replace [Coralogix Log4j SDK](https://coralogix.com/docs/integrations/sdks/log4j/index.md) appenders with an [OpenTelemetry-based approach](https://coralogix.com/docs/opentelemetry/instrumentation-options/java-opentelemetry-instrumentation/index.md) and export via OTLP.

## What will happen after June 30, 2026?

- The Coralogix Log4j SDK will no longer be supported.
- No bug fixes, updates, or security patches will be provided.
- Compatibility with newer Log4j versions is not guaranteed.
- Support requests related to the deprecated SDK may be declined.
- Existing applications may continue to function, but migration is strongly recommended.

## Need help?

Our team is here to help you migrate smoothly.

Reach out via our 24/7 in-app support or contact your Technical Account Manager, and we’ll guide you through the transition step by step.