diff --git a/Dockerfile b/Dockerfile
index ec66167..15d77f3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/linuxserver/baseimage-alpine:3.15
+FROM ghcr.io/linuxserver/baseimage-mono:focal
 
 # set version label
 ARG BUILD_DATE
@@ -8,18 +8,23 @@ LABEL build_version="Linuxserver.io version:- ${VERSION} Build-date:- ${BUILD_DA
 LABEL maintainer="thespad"
 
 # set environment variables
+ARG DEBIAN_FRONTEND="noninteractive"
 ENV XDG_CONFIG_HOME="/config/xdg"
 ENV SONARR_BRANCH="develop"
 
 RUN \
+ echo "**** add mediaarea repository ****" && \
+  curl -L \
+    "https://mediaarea.net/repo/deb/repo-mediaarea_1.0-12_all.deb" \
+    -o /tmp/key.deb && \
+  dpkg -i /tmp/key.deb && \
+  echo "deb https://mediaarea.net/repo/deb/ubuntu focal main" | tee /etc/apt/sources.list.d/mediaarea.list && \
   echo "**** install packages ****" && \
-  apk add -U --upgrade --no-cache \
+  apt-get update && \
+  apt-get install -y --no-install-recommends \
     curl \
     jq \
-    libmediainfo \
-    sqlite-libs && \
-  apk add -U --upgrade --no-cache --repository http://dl-cdn.alpinelinux.org/alpine/edge/testing \
-    mono && \
+    mediainfo && \
   echo "**** install sonarr ****" && \
   mkdir -p /app/sonarr/bin && \
   if [ -z ${SONARR_VERSION+x} ]; then \
@@ -32,10 +37,12 @@ RUN \
   tar xzf \
     /tmp/sonarr.tar.gz -C \
     /app/sonarr/bin --strip-components=1 && \
-  echo -e "UpdateMethod=docker\nBranch=${SONARR_BRANCH}\nPackageVersion=${VERSION}\nPackageAuthor=[linuxserver.io](https://www.linuxserver.io/)" > /app/sonarr/package_info && \  
+  echo "UpdateMethod=docker\nBranch=${SONARR_BRANCH}\nPackageVersion=${VERSION}\nPackageAuthor=[linuxserver.io](https://www.linuxserver.io/)" > /app/sonarr/package_info && \  
   rm -rf /app/sonarr/bin/Sonarr.Update && \
   echo "**** cleanup ****" && \
+  apt-get clean && \  
   rm -rf \
+    /var/lib/apt/lists/* \
     /tmp/* \
     /var/tmp/*
 
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index a19301d..c9d124e 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -8,18 +8,23 @@ LABEL build_version="Linuxserver.io version:- ${VERSION} Build-date:- ${BUILD_DA
 LABEL maintainer="thespad"
 
 # set environment variables
+ARG DEBIAN_FRONTEND="noninteractive"
 ENV XDG_CONFIG_HOME="/config/xdg"
 ENV SONARR_BRANCH="develop"
 
 RUN \
+ echo "**** add mediaarea repository ****" && \
+  curl -L \
+    "https://mediaarea.net/repo/deb/repo-mediaarea_1.0-12_all.deb" \
+    -o /tmp/key.deb && \
+  dpkg -i /tmp/key.deb && \
+  echo "deb https://mediaarea.net/repo/deb/ubuntu focal main" | tee /etc/apt/sources.list.d/mediaarea.list && \
   echo "**** install packages ****" && \
-  apk add -U --upgrade --no-cache \
+  apt-get update && \
+  apt-get install -y --no-install-recommends \
     curl \
     jq \
-    libmediainfo \
-    sqlite-libs && \
-  apk add -U --upgrade --no-cache --repository http://dl-cdn.alpinelinux.org/alpine/edge/testing \
-    mono && \
+    mediainfo && \
   echo "**** install sonarr ****" && \
   mkdir -p /app/sonarr/bin && \
   if [ -z ${SONARR_VERSION+x} ]; then \
@@ -32,10 +37,12 @@ RUN \
   tar xzf \
     /tmp/sonarr.tar.gz -C \
     /app/sonarr/bin --strip-components=1 && \
-  echo -e "UpdateMethod=docker\nBranch=${SONARR_BRANCH}\nPackageVersion=${VERSION}\nPackageAuthor=[linuxserver.io](https://www.linuxserver.io/)" > /app/sonarr/package_info && \  
+  echo "UpdateMethod=docker\nBranch=${SONARR_BRANCH}\nPackageVersion=${VERSION}\nPackageAuthor=[linuxserver.io](https://www.linuxserver.io/)" > /app/sonarr/package_info && \
   rm -rf /app/sonarr/bin/Sonarr.Update && \
   echo "**** cleanup ****" && \
+  apt-get clean && \ 
   rm -rf \
+    /var/lib/apt/lists/* \
     /tmp/* \
     /var/tmp/*
 
diff --git a/Dockerfile.armhf b/Dockerfile.armhf
index 58865e8..5102bb9 100644
--- a/Dockerfile.armhf
+++ b/Dockerfile.armhf
@@ -8,18 +8,23 @@ LABEL build_version="Linuxserver.io version:- ${VERSION} Build-date:- ${BUILD_DA
 LABEL maintainer="thespad"
 
 # set environment variables
+ARG DEBIAN_FRONTEND="noninteractive"
 ENV XDG_CONFIG_HOME="/config/xdg"
 ENV SONARR_BRANCH="develop"
 
 RUN \
+ echo "**** add mediaarea repository ****" && \
+  curl -L \
+    "https://mediaarea.net/repo/deb/repo-mediaarea_1.0-12_all.deb" \
+    -o /tmp/key.deb && \
+  dpkg -i /tmp/key.deb && \
+  echo "deb https://mediaarea.net/repo/deb/ubuntu focal main" | tee /etc/apt/sources.list.d/mediaarea.list && \
   echo "**** install packages ****" && \
-  apk add -U --upgrade --no-cache \
+  apt-get update && \
+  apt-get install -y --no-install-recommends \
     curl \
     jq \
-    libmediainfo \
-    sqlite-libs && \
-  apk add -U --upgrade --no-cache --repository http://dl-cdn.alpinelinux.org/alpine/edge/testing \
-    mono && \
+    mediainfo && \
   echo "**** install sonarr ****" && \
   mkdir -p /app/sonarr/bin && \
   if [ -z ${SONARR_VERSION+x} ]; then \
@@ -32,10 +37,12 @@ RUN \
   tar xzf \
     /tmp/sonarr.tar.gz -C \
     /app/sonarr/bin --strip-components=1 && \
-  echo -e "UpdateMethod=docker\nBranch=${SONARR_BRANCH}\nPackageVersion=${VERSION}\nPackageAuthor=[linuxserver.io](https://www.linuxserver.io/)" > /app/sonarr/package_info && \  
+  echo "UpdateMethod=docker\nBranch=${SONARR_BRANCH}\nPackageVersion=${VERSION}\nPackageAuthor=[linuxserver.io](https://www.linuxserver.io/)" > /app/sonarr/package_info && \  
   rm -rf /app/sonarr/bin/Sonarr.Update && \
   echo "**** cleanup ****" && \
+  apt-get clean && \  
   rm -rf \
+    /var/lib/apt/lists/* \  
     /tmp/* \
     /var/tmp/*
 
diff --git a/Jenkinsfile b/Jenkinsfile
index 1414193..5452f24 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -24,7 +24,7 @@ pipeline {
     DOCKERHUB_IMAGE = 'linuxserver/sonarr'
     DEV_DOCKERHUB_IMAGE = 'lsiodev/sonarr'
     PR_DOCKERHUB_IMAGE = 'lspipepr/sonarr'
-    DIST_IMAGE = 'alpine'
+    DIST_IMAGE = 'ubuntu'
     MULTIARCH='true'
     CI='true'
     CI_WEB='true'
diff --git a/README.md b/README.md
index 3e33c06..a21d215 100644
--- a/README.md
+++ b/README.md
@@ -236,6 +236,7 @@ Once registered you can define the dockerfile to use with `-f Dockerfile.aarch64
 
 ## Versions
 
+* **02.08.22:** - Rebase develop branch to Ubuntu Focal due to dropping of mono support on Alpine.
 * **20.02.22:** - Rebase develop branch to Alpine.
 * **13.12.21:** - Switch strategy for mediainfo
 * **10.02.21:** - Rebase to mono focal baseimage. Switch to v3 nightlies.
diff --git a/jenkins-vars.yml b/jenkins-vars.yml
index ae37643..cba7f78 100644
--- a/jenkins-vars.yml
+++ b/jenkins-vars.yml
@@ -15,7 +15,7 @@ repo_vars:
   - DOCKERHUB_IMAGE = 'linuxserver/sonarr'
   - DEV_DOCKERHUB_IMAGE = 'lsiodev/sonarr'
   - PR_DOCKERHUB_IMAGE = 'lspipepr/sonarr'
-  - DIST_IMAGE = 'alpine'
+  - DIST_IMAGE = 'ubuntu'
   - MULTIARCH='true'
   - CI='true'
   - CI_WEB='true'
diff --git a/readme-vars.yml b/readme-vars.yml
index f4ec86c..5ecaa52 100644
--- a/readme-vars.yml
+++ b/readme-vars.yml
@@ -44,7 +44,8 @@ app_setup_block: |
 
 # changelog
 changelogs:
-  - { date: "20.02.22:", desc: "Rebase develop branch to Alpine." }  
+  - { date: "02.08.22:", desc: "Rebase develop branch to Ubuntu Focal due to dropping of mono support on Alpine." }
+  - { date: "20.02.22:", desc: "Rebase develop branch to Alpine." }
   - { date: "13.12.21:", desc: "Switch strategy for mediainfo" }
   - { date: "10.02.21:", desc: "Rebase to mono focal baseimage. Switch to v3 nightlies." }
   - { date: "18.01.21:", desc: "Deprecate `UMASK_SET` in favor of UMASK in baseimage, see above for more information." }
diff --git a/root/etc/cont-init.d/30-config b/root/etc/cont-init.d/30-config
index 7ab0aa7..9010fc3 100644
--- a/root/etc/cont-init.d/30-config
+++ b/root/etc/cont-init.d/30-config
@@ -4,13 +4,6 @@
 [[ -e /config/sonarr.pid ]] && \
     rm -rf /config/sonarr.pid
 
-# update certs for mono
-if [[ ! -f "/app/sonarr/donecerts" ]]; then
-    echo "*** Running mono cert sync ***"
-    cert-sync --quiet /etc/ssl/certs/ca-certificates.crt
-    touch "/app/sonarr/donecerts"
-fi
-
 # permissions
 chown -R abc:abc \
     /app/sonarr/bin
diff --git a/root/etc/services.d/sonarr/run b/root/etc/services.d/sonarr/run
old mode 100644
new mode 100755