diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3e0b15e17..33a611ea3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.15.1 / 2019-12-25
+
+* [BUGFIX] Fixed race on concurrent queries against same data. #6512
+
 ## 2.15.0 / 2019-12-23
 
 * [CHANGE] Discovery: Removed `prometheus_sd_kubernetes_cache_*` metrics. Additionally `prometheus_sd_kubernetes_workqueue_latency_seconds` and `prometheus_sd_kubernetes_workqueue_work_duration_seconds` metrics now show correct values in seconds. #6393
diff --git a/VERSION b/VERSION
index 68e69e405..3b1fc7950 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.15.0
+2.15.1