diff --git a/Dockerfile b/Dockerfile
index 745fb35..fe8d01a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM lsiobase/alpine:3.8
+FROM lsiobase/alpine:3.9
 
 # set version label
 ARG BUILD_DATE
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index be8264b..bf0e32c 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -1,4 +1,4 @@
-FROM lsiobase/alpine.arm64:3.8
+FROM lsiobase/alpine.arm64:3.9
 
 # Add qemu to build on x86_64 systems
 COPY qemu-aarch64-static /usr/bin
diff --git a/Dockerfile.armhf b/Dockerfile.armhf
index bbb4e9c..cff047f 100644
--- a/Dockerfile.armhf
+++ b/Dockerfile.armhf
@@ -1,4 +1,4 @@
-FROM lsiobase/alpine.armhf:3.8
+FROM lsiobase/alpine.armhf:3.9
 
 # Add qemu to build on x86_64 systems
 COPY qemu-arm-static /usr/bin
diff --git a/readme-vars.yml b/readme-vars.yml
index f93d155..e0d241f 100644
--- a/readme-vars.yml
+++ b/readme-vars.yml
@@ -46,6 +46,7 @@ app_setup_block: |
 
 # changelog
 changelogs:
+  - { date: "22.02.19:", desc: "Rebasing to alpine 3.9." }
   - { date: "11.02.19:", desc: "Add pipeline logic and multi arch." }
   - { date: "22.08.18:", desc: "Rebase to alpine 3.8." }
   - { date: "10.08.18:", desc: "Update to ddclient v3.9.0. For Cloudflare users, please ensure you remove the line `server=www.cloudflare.com` from your `ddclient.conf`." }