diff --git a/.github/workflows/external_trigger.yml b/.github/workflows/external_trigger.yml
index 5442d74..a866fdb 100644
--- a/.github/workflows/external_trigger.yml
+++ b/.github/workflows/external_trigger.yml
@@ -18,7 +18,7 @@ jobs:
           fi
           echo "**** External trigger running off of nightly branch. To disable this trigger, set a Github secret named \"PAUSE_EXTERNAL_TRIGGER_READARR_NIGHTLY\". ****"
           echo "**** Retrieving external version ****"
-          EXT_RELEASE=$(curl -sL https://readarr.servarr.com/v1/update/nightly/changes?runtime=netcore%26os=linux | jq -r '.[0].version')
+          EXT_RELEASE=$(curl -sL https://readarr.servarr.com/v1/update/nightly/changes?runtime=netcore%26os=linuxmusl | jq -r '.[0].version')
           if [ -z "${EXT_RELEASE}" ] || [ "${EXT_RELEASE}" == "null" ]; then
             echo "**** Can't retrieve external version, exiting ****"
             FAILURE_REASON="Can't retrieve external version for readarr branch nightly"
diff --git a/Dockerfile b/Dockerfile
index 45acb01..522dc64 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,42 +1,40 @@
-FROM ghcr.io/linuxserver/baseimage-ubuntu:focal
+FROM ghcr.io/linuxserver/baseimage-alpine:3.15
 
 # set version label
 ARG BUILD_DATE
 ARG VERSION
 ARG READARR_RELEASE
 LABEL build_version="Linuxserver.io version:- ${VERSION} Build-date:- ${BUILD_DATE}"
-LABEL maintainer="Roxedus"
+LABEL maintainer="Roxedus,thespad"
 
 # environment settings
-ARG DEBIAN_FRONTEND="noninteractive"
 ARG READARR_BRANCH="nightly"
 ENV XDG_CONFIG_HOME="/config/xdg"
 
 RUN \
   echo "**** install packages ****" && \
-  apt-get update && \
-  apt-get install --no-install-recommends -y \
+  apk add -U --upgrade --no-cache \
+    curl \
     jq \
-    libicu66 \
-    sqlite3 && \
+    icu-libs \
+    sqlite-libs && \
   echo "**** install readarr ****" && \
   mkdir -p /app/readarr/bin && \
   if [ -z ${READARR_RELEASE+x} ]; then \
-    READARR_RELEASE=$(curl -sL "https://readarr.servarr.com/v1/update/${READARR_BRANCH}/changes?runtime=netcore&os=linux" \
+    READARR_RELEASE=$(curl -sL "https://readarr.servarr.com/v1/update/${READARR_BRANCH}/changes?runtime=netcore&os=linuxmusl" \
     | jq -r '.[0].version'); \
   fi && \
   curl -o \
   /tmp/readarr.tar.gz -L \
-    "https://readarr.servarr.com/v1/update/${READARR_BRANCH}/updatefile?version=${READARR_RELEASE}&os=linux&runtime=netcore&arch=x64" && \
-  tar ixzf \
-  /tmp/readarr.tar.gz -C \
+    "https://readarr.servarr.com/v1/update/${READARR_BRANCH}/updatefile?version=${READARR_RELEASE}&os=linuxmusl&runtime=netcore&arch=x64" && \
+  tar xzf \
+    /tmp/readarr.tar.gz -C \
     /app/readarr/bin --strip-components=1 && \
-  echo "UpdateMethod=docker\nBranch=${READARR_BRANCH}\nPackageVersion=${VERSION}\nPackageAuthor=linuxserver.io" > /app/readarr/package_info && \
+  echo -e "UpdateMethod=docker\nBranch=${READARR_BRANCH}\nPackageVersion=${VERSION}\nPackageAuthor=[linuxserver.io](https://www.linuxserver.io/)\nPackageGlobalMessage=Warn: This image is now based on Alpine. Custom scripts using apt-get will need to be updated to use apk" > /app/readarr/package_info && \
   echo "**** cleanup ****" && \
   rm -rf \
     /app/readarr/bin/Readarr.Update \
     /tmp/* \
-    /var/lib/apt/lists/* \
     /var/tmp/*
 
 # copy local files
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index e4bffa5..fb3b93f 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -1,42 +1,40 @@
-FROM ghcr.io/linuxserver/baseimage-ubuntu:arm64v8-focal
+FROM ghcr.io/linuxserver/baseimage-alpine:arm64v8-3.15
 
 # set version label
 ARG BUILD_DATE
 ARG VERSION
 ARG READARR_RELEASE
 LABEL build_version="Linuxserver.io version:- ${VERSION} Build-date:- ${BUILD_DATE}"
-LABEL maintainer="Roxedus"
+LABEL maintainer="Roxedus,thespad"
 
 # environment settings
-ARG DEBIAN_FRONTEND="noninteractive"
 ARG READARR_BRANCH="nightly"
 ENV XDG_CONFIG_HOME="/config/xdg"
 
 RUN \
   echo "**** install packages ****" && \
-  apt-get update && \
-  apt-get install --no-install-recommends -y \
+  apk add -U --upgrade --no-cache \
+    curl \
     jq \
-    libicu66 \
-    sqlite3 && \
+    icu-libs \
+    sqlite-libs && \
   echo "**** install readarr ****" && \
   mkdir -p /app/readarr/bin && \
   if [ -z ${READARR_RELEASE+x} ]; then \
-    READARR_RELEASE=$(curl -sL "https://readarr.servarr.com/v1/update/${READARR_BRANCH}/changes?runtime=netcore&os=linux" \
+    READARR_RELEASE=$(curl -sL "https://readarr.servarr.com/v1/update/${READARR_BRANCH}/changes?runtime=netcore&os=linuxmusl" \
     | jq -r '.[0].version'); \
   fi && \
   curl -o \
   /tmp/readarr.tar.gz -L \
-    "https://readarr.servarr.com/v1/update/${READARR_BRANCH}/updatefile?version=${READARR_RELEASE}&os=linux&runtime=netcore&arch=arm64" && \
-  tar ixzf \
-  /tmp/readarr.tar.gz -C \
+    "https://readarr.servarr.com/v1/update/${READARR_BRANCH}/updatefile?version=${READARR_RELEASE}&os=linuxmusl&runtime=netcore&arch=arm64" && \
+  tar xzf \
+    /tmp/readarr.tar.gz -C \
     /app/readarr/bin --strip-components=1 && \
-  echo "UpdateMethod=docker\nBranch=${READARR_BRANCH}\nPackageVersion=${VERSION}\nPackageAuthor=linuxserver.io" > /app/readarr/package_info && \
+  echo -e "UpdateMethod=docker\nBranch=${READARR_BRANCH}\nPackageVersion=${VERSION}\nPackageAuthor=[linuxserver.io](https://www.linuxserver.io/)\nPackageGlobalMessage=Warn: This image is now based on Alpine. Custom scripts using apt-get will need to be updated to use apk" > /app/readarr/package_info && \
   echo "**** cleanup ****" && \
   rm -rf \
     /app/readarr/bin/Readarr.Update \
     /tmp/* \
-    /var/lib/apt/lists/* \
     /var/tmp/*
 
 # copy local files
diff --git a/Dockerfile.armhf b/Dockerfile.armhf
index 974085e..c603e64 100644
--- a/Dockerfile.armhf
+++ b/Dockerfile.armhf
@@ -1,42 +1,40 @@
-FROM ghcr.io/linuxserver/baseimage-ubuntu:arm32v7-focal
+FROM ghcr.io/linuxserver/baseimage-alpine:arm32v7-3.15
 
 # set version label
 ARG BUILD_DATE
 ARG VERSION
 ARG READARR_RELEASE
 LABEL build_version="Linuxserver.io version:- ${VERSION} Build-date:- ${BUILD_DATE}"
-LABEL maintainer="Roxedus"
+LABEL maintainer="Roxedus,thespad"
 
 # environment settings
-ARG DEBIAN_FRONTEND="noninteractive"
 ARG READARR_BRANCH="nightly"
 ENV XDG_CONFIG_HOME="/config/xdg"
 
 RUN \
   echo "**** install packages ****" && \
-  apt-get update && \
-  apt-get install --no-install-recommends -y \
+  apk add -U --upgrade --no-cache \
+    curl \
     jq \
-    libicu66 \
-    sqlite3 && \
+    icu-libs \
+    sqlite-libs && \
   echo "**** install readarr ****" && \
   mkdir -p /app/readarr/bin && \
   if [ -z ${READARR_RELEASE+x} ]; then \
-    READARR_RELEASE=$(curl -sL "https://readarr.servarr.com/v1/update/${READARR_BRANCH}/changes?runtime=netcore&os=linux" \
+    READARR_RELEASE=$(curl -sL "https://readarr.servarr.com/v1/update/${READARR_BRANCH}/changes?runtime=netcore&os=linuxmusl" \
     | jq -r '.[0].version'); \
   fi && \
   curl -o \
   /tmp/readarr.tar.gz -L \
-    "https://readarr.servarr.com/v1/update/${READARR_BRANCH}/updatefile?version=${READARR_RELEASE}&os=linux&runtime=netcore&arch=arm" && \
-  tar ixzf \
-  /tmp/readarr.tar.gz -C \
+    "https://readarr.servarr.com/v1/update/${READARR_BRANCH}/updatefile?version=${READARR_RELEASE}&os=linuxmusl&runtime=netcore&arch=arm" && \
+  tar xzf \
+    /tmp/readarr.tar.gz -C \
     /app/readarr/bin --strip-components=1 && \
-  echo "UpdateMethod=docker\nBranch=${READARR_BRANCH}\nPackageVersion=${VERSION}\nPackageAuthor=linuxserver.io" > /app/readarr/package_info && \
+  echo -e "UpdateMethod=docker\nBranch=${READARR_BRANCH}\nPackageVersion=${VERSION}\nPackageAuthor=[linuxserver.io](https://www.linuxserver.io/)\nPackageGlobalMessage=Warn: This image is now based on Alpine. Custom scripts using apt-get will need to be updated to use apk" > /app/readarr/package_info && \
   echo "**** cleanup ****" && \
   rm -rf \
     /app/readarr/bin/Readarr.Update \
     /tmp/* \
-    /var/lib/apt/lists/* \
     /var/tmp/*
 
 # copy local files
diff --git a/Jenkinsfile b/Jenkinsfile
index c376f04..4fec853 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -24,7 +24,7 @@ pipeline {
     DOCKERHUB_IMAGE = 'linuxserver/readarr'
     DEV_DOCKERHUB_IMAGE = 'lsiodev/readarr'
     PR_DOCKERHUB_IMAGE = 'lspipepr/readarr'
-    DIST_IMAGE = 'ubuntu'
+    DIST_IMAGE = 'alpine'
     MULTIARCH='true'
     CI='true'
     CI_WEB='true'
@@ -104,7 +104,7 @@ pipeline {
       steps{
         script{
           env.EXT_RELEASE = sh(
-            script: ''' curl -sL https://readarr.servarr.com/v1/update/nightly/changes?runtime=netcore%26os=linux | jq -r '.[0].version' ''',
+            script: ''' curl -sL https://readarr.servarr.com/v1/update/nightly/changes?runtime=netcore%26os=linuxmusl | jq -r '.[0].version' ''',
             returnStdout: true).trim()
             env.RELEASE_LINK = 'custom_command'
         }
diff --git a/README.md b/README.md
index aeedfa2..f73eb8f 100644
--- a/README.md
+++ b/README.md
@@ -243,6 +243,8 @@ Once registered you can define the dockerfile to use with `-f Dockerfile.aarch64
 
 ## Versions
 
+* **04.02.22:** - Rebase nightly branch to Alpine.
 * **21.01.22:** - Remove chromaprint as it's no longer a required dependency.
 * **01.01.22:** - Add chromaprint for audio fingerprinting.
+* **30.12.21:** - Add nightly-alpine branch.
 * **28.07.21:** - Initial Release.
diff --git a/jenkins-vars.yml b/jenkins-vars.yml
index 4a584d2..698a9bb 100644
--- a/jenkins-vars.yml
+++ b/jenkins-vars.yml
@@ -2,7 +2,7 @@
 # jenkins variables
 project_name: docker-readarr
 external_type: na
-custom_version_command: curl -sL https://readarr.servarr.com/v1/update/nightly/changes?runtime=netcore%26os=linux | jq -r '.[0].version'
+custom_version_command: curl -sL https://readarr.servarr.com/v1/update/nightly/changes?runtime=netcore%26os=linuxmusl | jq -r '.[0].version'
 release_type: prerelease
 release_tag: nightly
 ls_branch: nightly
@@ -14,7 +14,7 @@ repo_vars:
   - DOCKERHUB_IMAGE = 'linuxserver/readarr'
   - DEV_DOCKERHUB_IMAGE = 'lsiodev/readarr'
   - PR_DOCKERHUB_IMAGE = 'lspipepr/readarr'
-  - DIST_IMAGE = 'ubuntu'
+  - DIST_IMAGE = 'alpine'
   - MULTIARCH='true'
   - CI='true'
   - CI_WEB='true'
diff --git a/readme-vars.yml b/readme-vars.yml
index 4d3f9c3..7b34335 100644
--- a/readme-vars.yml
+++ b/readme-vars.yml
@@ -53,6 +53,8 @@ app_setup_block: |
 
 # changelog
 changelogs:
+  - { date: "04.02.22:", desc: "Rebase nightly branch to Alpine." }
   - { date: "21.01.22:", desc: "Remove chromaprint as it's no longer a required dependency." }
   - { date: "01.01.22:", desc: "Add chromaprint for audio fingerprinting." }
+  - { date: "30.12.21:", desc: "Add nightly-alpine branch." }
   - { date: "28.07.21:", desc: "Initial Release." }