diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8af528d9931dee02c336edab99cc50ea73d94ddc..32977fdd39554808234af5343c880e08d2532c20 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,8 +1,16 @@
 image: "registry.gitlab.e.foundation/e/os/docker-android-apps-cicd:master"
 
+variables:
+  PROJECT_ID: "83" # under Settings -> General
+  APK_PATH: "app/build/outputs/apk/ose/release"
+  UNSIGNED_APK: "davx5-ose-release-unsigned.apk"
+  DEV_APK: "Account-manager-dev.apk"
+  STABLE_APK: "Account-manager-stable.apk"
+
 stages:
   - update-from-upstream
   - build
+  - release
 
 before_script:
   - echo email.key=$PEPPER >> local.properties
@@ -27,10 +35,95 @@ build:
   stage: build
   script:
     - ./gradlew build -x test
+    - cd app/build/outputs/apk/ose/
+    - |
+      if [[ ! -d "release" ]]; then
+        echo "$APK_PATH does not exist."
+        exit 1
+      fi
+      cd "release"
+      unsigned_build=$(ls *.apk | grep "unsigned")
+      cp $unsigned_build $UNSIGNED_APK
   artifacts:
     paths:
       - app/build/outputs/apk/ose/
 
+init_submodules:
+  stage: release
+  rules:
+    - if: '$CI_COMMIT_TAG && $CI_COMMIT_REF_PROTECTED == "true"'
+      when: on_success
+  script:
+    - |
+      git submodule add --force \
+      https://gitlab.e.foundation/e/os/system-apps-update-info.git systemAppsUpdateInfo
+  artifacts:
+    paths:
+      - systemAppsUpdateInfo/
+
+generate-apks:
+  stage: release
+  rules:
+    - if: '$CI_COMMIT_TAG && $CI_COMMIT_REF_PROTECTED == "true"'
+      when: on_success
+  needs:
+    - init_submodules
+    - build
+  dependencies:
+    - init_submodules
+    - build
+  before_script:
+    - apt update && apt install apksigner -y
+  script:
+    - |
+      ./systemAppsUpdateInfo/scripts/generate-apks.sh \
+      "$APK_PATH" "$UNSIGNED_APK" "$DEV_APK" "$STABLE_APK"
+  artifacts:
+    paths:
+      - $APK_PATH/$UNSIGNED_APK
+      - $APK_PATH/$DEV_APK
+      - $APK_PATH/$STABLE_APK
+
+create-json-files:
+  stage: release
+  dependencies:
+    - init_submodules
+    - generate-apks
+  needs:
+    - init_submodules
+    - generate-apks
+  rules:
+    - if: '$CI_COMMIT_TAG && $CI_COMMIT_REF_PROTECTED == "true"'
+      when: manual
+  before_script:
+    - apt update && apt install jq aapt -y
+  script:
+    - |
+      ./systemAppsUpdateInfo/scripts/create-json-files.sh \
+      "$APK_PATH" "$UNSIGNED_APK" "$DEV_APK" "$STABLE_APK"
+  artifacts:
+    paths:
+      - dev.json
+      - stable.json
+
+create-release:
+  stage: release
+  dependencies:
+    - init_submodules
+  needs:
+    - init_submodules
+    - create-json-files
+    - generate-apks
+  rules:
+    - if: '$CI_COMMIT_TAG && $CI_COMMIT_REF_PROTECTED == "true"'
+      when: on_success
+  before_script:
+    - apt update && apt install jq -y
+  script:
+    - |
+      ./systemAppsUpdateInfo/scripts/create-release.sh \
+      "$APK_PATH" "$UNSIGNED_APK" "$DEV_APK" "$STABLE_APK"
+
 .update-from-upstream:
   stage: update-from-upstream
   rules:
diff --git a/build.gradle b/build.gradle
index e7341354fa58cc95cfa19c0bd857a21fdc305db3..e969706ab4a9dd19c37b22e1bac029d0e9bb1092 100644
--- a/build.gradle
+++ b/build.gradle
@@ -19,7 +19,7 @@ buildscript {
         commonsText: '1.10.0',
         // own libraries
         cert4android: '2bb3898',
-        dav4jvm: '1ed89c1',
+        dav4jvm: '1ed89c165d',
         ical4android: '1.1.2',
         vcard4android: '1.1.2'
     ]