diff --git a/Dockerfile b/Dockerfile
index 3ad82e6..542ba64 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM lsiobase/alpine.nginx:3.8
+FROM lsiobase/alpine.nginx:3.9
 
 # set version label
 ARG BUILD_DATE
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index 6bec0d3..590cdff 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -1,4 +1,4 @@
-FROM lsiobase/alpine.nginx.arm64:3.8
+FROM lsiobase/alpine.nginx.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 f90c78b..d4b7fad 100644
--- a/Dockerfile.armhf
+++ b/Dockerfile.armhf
@@ -1,4 +1,4 @@
-FROM lsiobase/alpine.nginx.armhf:3.8
+FROM lsiobase/alpine.nginx.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 3854efe..c37c721 100644
--- a/readme-vars.yml
+++ b/readme-vars.yml
@@ -52,6 +52,7 @@ app_setup_block: |
 
 # changelog
 changelogs:
+  - { date: "22.02.19:", desc: "Rebasing to alpine 3.9." }
   - { date: "16.01.18:", desc: "Generate random app key in .env for new installs." }
   - { date: "20.11.18:", desc: "Upgrade baseimage packages during build." }
   - { date: "04.11.18:", desc: "Add php7-zip." }