diff --git a/CHANGELOG.md b/CHANGELOG.md
index 042248c6..36605bb1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - OpenAPI specification file rokwire.yaml file split across different building blocks. [#485](https://github.com/rokwire/rokwire-building-blocks-api/issues/485)
 - Update Swagger-UI version. [#500](https://github.com/rokwire/rokwire-building-blocks-api/issues/500)
 - Rokwire API Doc Dockerfile to integrate multiple OpenAPI specifications file. [#486](https://github.com/rokwire/rokwire-building-blocks-api/issues/486)
+- Update Appconfig Building Block docker base image. [#515](https://github.com/rokwire/rokwire-building-blocks-api/issues/515)
 
 ### Removed
 - rokwire.yaml file and deployment scripts that were not getting used. [#486](https://github.com/rokwire/rokwire-building-blocks-api/issues/486)
diff --git a/appconfigservice/Dockerfile b/appconfigservice/Dockerfile
index a9d8198e..b9f59f7d 100644
--- a/appconfigservice/Dockerfile
+++ b/appconfigservice/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3-alpine
+FROM python:3-alpine3.11
 
 LABEL maintainer="wzhu26@illinois.edu"