diff --git a/CHANGELOG.md b/CHANGELOG.md
index 498f0f3..6d131c6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+## [4.3.1-1] - 07/12/2019
+### Changed
+* Update base image to Alpine 3.10.3
+
 ## [4.3.1] - 17/07/2019
 ### Added
 * Proper Docker signal handling (eg. SIGINT) by making Circus be the PID 1
diff --git a/Dockerfile b/Dockerfile
index 86bea57..ac20ffb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.10.1
+FROM alpine:3.10.3
 
 LABEL maintainer="Adrien Ferrand <ferrand.ad@gmail.com>"
 
diff --git a/VERSION b/VERSION
index f77856a..91af441 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.3.1
+4.3.1-1