diff --git a/Dockerfile b/Dockerfile
index 469a389..d415898 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@
 
 FROM ghcr.io/linuxserver/unrar:latest AS unrar
 
-FROM ghcr.io/linuxserver/baseimage-ubuntu:jammy
+FROM ghcr.io/linuxserver/baseimage-alpine:3.23
 
 # set version label
 ARG BUILD_DATE
@@ -15,21 +15,20 @@ ARG DEBIAN_FRONTEND="noninteractive"
 
 RUN \
   echo "**** install build dependencies ****" && \
-  apt-get update && \
-  apt-get install -y --no-install-recommends \
-    build-essential \
+  apk add --no-cache --virtual=build-dependencies \
+    build-base \
+    jpeg-dev \
     libffi-dev \
-    libjpeg9-dev \
     libwebp-dev \
     python3-dev \
-    zlib1g-dev && \
+    zlib-dev && \
   echo "**** install runtime packages ****" && \
-  apt-get install -y --no-install-recommends \
-    libjpeg9 \
+  apk add --no-cache \
+    jpeg \
+    libwebp-tools \
     nodejs \
-    python3-venv \
-    webp \
-    zlib1g-dev && \
+    python3 \
+    zlib && \
   echo "**** install mylar3 ****" && \
   if [ -z ${MYLAR3_RELEASE+x} ]; then \
     MYLAR3_RELEASE=$(curl -sX GET https://api.github.com/repos/mylar3/mylar3/commits/1000papercuts \
@@ -46,28 +45,20 @@ RUN \
   pip install -U --no-cache-dir \
     pip \
     wheel && \
-  pip install --no-cache-dir --find-links https://wheel-index.linuxserver.io/ubuntu/ -r requirements.txt && \
+  pip install --no-cache-dir --find-links https://wheel-index.linuxserver.io/alpine-3.23/ -r requirements.txt && \
   printf "Linuxserver.io version: ${VERSION}\nBuild-date: ${BUILD_DATE}" > /build_version && \
   echo "**** cleanup ****" && \
-  apt-get -y purge \
-    build-essential \
-    libffi-dev \
-    libjpeg9-dev \
-    libwebp-dev \
-    python3-dev \
-    zlib1g-dev && \
-  apt-get -y autoremove && \
+  apk del --purge \
+    build-dependencies && \
   rm -rf \
-    /tmp/* \
-    /var/lib/apt/lists/* \
-    /var/tmp/* \
-    $HOME/.cache
+    $HOME/.cache \
+    /tmp/*
 
 # add local files
 COPY root/ /
 
 # add unrar
-COPY --from=unrar /usr/bin/unrar-ubuntu /usr/bin/unrar
+COPY --from=unrar /usr/bin/unrar-alpine /usr/bin/unrar
 
 # ports and volumes
 VOLUME /config
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index 6e0199d..c3c1bc1 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -2,7 +2,7 @@
 
 FROM ghcr.io/linuxserver/unrar:arm64v8-latest AS unrar
 
-FROM ghcr.io/linuxserver/baseimage-ubuntu:arm64v8-jammy
+FROM ghcr.io/linuxserver/baseimage-alpine:arm64v8-3.23
 
 # set version label
 ARG BUILD_DATE
@@ -15,21 +15,20 @@ ARG DEBIAN_FRONTEND="noninteractive"
 
 RUN \
   echo "**** install build dependencies ****" && \
-  apt-get update && \
-  apt-get install -y --no-install-recommends \
-    build-essential \
+  apk add --no-cache --virtual=build-dependencies \
+    build-base \
+    jpeg-dev \
     libffi-dev \
-    libjpeg9-dev \
     libwebp-dev \
     python3-dev \
-    zlib1g-dev && \
+    zlib-dev && \
   echo "**** install runtime packages ****" && \
-  apt-get install -y --no-install-recommends \
-    libjpeg9 \
+  apk add --no-cache \
+    jpeg \
+    libwebp-tools \
     nodejs \
-    python3-venv \
-    webp \
-    zlib1g-dev && \
+    python3 \
+    zlib && \
   echo "**** install mylar3 ****" && \
   if [ -z ${MYLAR3_RELEASE+x} ]; then \
     MYLAR3_RELEASE=$(curl -sX GET https://api.github.com/repos/mylar3/mylar3/commits/1000papercuts \
@@ -46,28 +45,20 @@ RUN \
   pip install -U --no-cache-dir \
     pip \
     wheel && \
-  pip install --no-cache-dir --find-links https://wheel-index.linuxserver.io/ubuntu/ -r requirements.txt && \
+  pip install --no-cache-dir --find-links https://wheel-index.linuxserver.io/alpine-3.23/ -r requirements.txt && \
   printf "Linuxserver.io version: ${VERSION}\nBuild-date: ${BUILD_DATE}" > /build_version && \
   echo "**** cleanup ****" && \
-  apt-get -y purge \
-    build-essential \
-    libffi-dev \
-    libjpeg9-dev \
-    libwebp-dev \
-    python3-dev \
-    zlib1g-dev && \
-  apt-get -y autoremove && \
+  apk del --purge \
+    build-dependencies && \
   rm -rf \
-    /tmp/* \
-    /var/lib/apt/lists/* \
-    /var/tmp/* \
-    $HOME/.cache
+    $HOME/.cache \
+    /tmp/*
 
 # add local files
 COPY root/ /
 
 # add unrar
-COPY --from=unrar /usr/bin/unrar-ubuntu /usr/bin/unrar
+COPY --from=unrar /usr/bin/unrar-alpine /usr/bin/unrar
 
 # ports and volumes
 VOLUME /config
diff --git a/Jenkinsfile b/Jenkinsfile
index 674e3cc..08a00fe 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -29,7 +29,7 @@ pipeline {
     DOCKERHUB_IMAGE = 'linuxserver/mylar3'
     DEV_DOCKERHUB_IMAGE = 'lsiodev/mylar3'
     PR_DOCKERHUB_IMAGE = 'lspipepr/mylar3'
-    DIST_IMAGE = 'ubuntu'
+    DIST_IMAGE = 'alpine'
     MULTIARCH='true'
     CI='true'
     CI_WEB='true'
diff --git a/README.md b/README.md
index e2e4e45..b83542c 100644
--- a/README.md
+++ b/README.md
@@ -60,9 +60,9 @@ This image provides various versions that are available via tags. Please read th
 
 | Tag | Available | Description |
 | :----: | :----: |--- |
-| latest | ✅ | Stable Mylar3 releases |
-| nightly | ✅ | Commits to Mylar3 `python3-dev` branch |
-| unstable | ✅ | Commits to Mylar3 `1000papercuts` branch |
+| latest | ✅ | Commits to Mylar3 `python3-dev` branch |
+| nightly | ✅ | Commits to Mylar3 `1000papercuts` branch (ubuntu) |
+| unstable | ✅ | Commits to Mylar3 `1000papercuts` branch (alpine) |
 
 ## Application Setup
 
@@ -289,4 +289,5 @@ Once registered you can define the dockerfile to use with `-f Dockerfile.aarch64
 
 ## Versions
 
+* **19.02.26:** - Rebase `unstable` tag to alpine 3.23.
 * **05.02.26:** - Release `unstable` tag based on commits to upstream `1000papercuts` branch.
diff --git a/jenkins-vars.yml b/jenkins-vars.yml
index cd4804a..d8e3923 100644
--- a/jenkins-vars.yml
+++ b/jenkins-vars.yml
@@ -17,7 +17,7 @@ repo_vars:
   - DOCKERHUB_IMAGE = 'linuxserver/mylar3'
   - DEV_DOCKERHUB_IMAGE = 'lsiodev/mylar3'
   - PR_DOCKERHUB_IMAGE = 'lspipepr/mylar3'
-  - DIST_IMAGE = 'ubuntu'
+  - DIST_IMAGE = 'alpine'
   - MULTIARCH='true'
   - CI='true'
   - CI_WEB='true'
diff --git a/readme-vars.yml b/readme-vars.yml
index 64a0268..7ef193a 100644
--- a/readme-vars.yml
+++ b/readme-vars.yml
@@ -13,9 +13,9 @@ available_architectures:
 # development version
 development_versions: true
 development_versions_items:
-  - {tag: "latest", desc: "Stable Mylar3 releases"}
-  - {tag: "nightly", desc: "Commits to Mylar3 `python3-dev` branch"}
-  - {tag: "unstable", desc: "Commits to Mylar3 `1000papercuts` branch"}
+  - {tag: "latest", desc: "Commits to Mylar3 `python3-dev` branch"}
+  - {tag: "nightly", desc: "Commits to Mylar3 `1000papercuts` branch (ubuntu)"}
+  - {tag: "unstable", desc: "Commits to Mylar3 `1000papercuts` branch (alpine)"}
 # container parameters
 param_container_name: "{{ project_name }}"
 param_usage_include_vols: true
@@ -79,4 +79,5 @@ init_diagram: |
   "mylar3:unstable" <- Base Images
 # changelog
 changelogs:
+  - {date: "19.02.26:", desc: "Rebase `unstable` tag to alpine 3.23."}
   - {date: "05.02.26:", desc: "Release `unstable` tag based on commits to upstream `1000papercuts` branch."}