# Grafana v4.5.2 — Release & Upgrade Intelligence
- **Product:** Grafana (https://grafana.com)
- **Version:** v4.5.2
- **Released:** Sep 22, 2017
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/grafana/updates/v4.5.2/

## Executive Summary (TL;DR)
Grafana v4.5.2. Source highlight: Download Page

## Bug Fixes
- **Graphite**: Fix for issues with jsonData & graphiteVersion null errors #9258
- **Graphite**: Fix for Grafana internal metrics to Graphite sending NaN values #9279
- **HTTP API**: Fix for HEAD method requests #9307
- **Templating**: Fix for duplicate template variable queries when refresh is set to time range change #9185
- **Metrics**: dont write NaN values to graphite #9279