diff --git a/CHANGELOG.md b/CHANGELOG.md
index a55e15bf..c0fc2029 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,9 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 
+## [5.0.4] - 2019-08-20
+- Windows build fixes (there was a problem with the use of ::poll that has a different name on Windows (WSAPoll))
+
 ## [5.0.3] - 2019-08-14
 - CobraMetricThreadedPublisher _enable flag is an atomic, and CobraMetricsPublisher is enabled by default
 
diff --git a/DOCKER_VERSION b/DOCKER_VERSION
index 50e2274e..2d6c0bcf 100644
--- a/DOCKER_VERSION
+++ b/DOCKER_VERSION
@@ -1 +1 @@
-5.0.3
+5.0.4