diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index e772b6b..9d62b85 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -47,7 +47,7 @@ package:
   only:
     - tags
 
-test-plain-install:
+test-install:
   stage: test
   image: docker:latest
   services:
@@ -62,7 +62,26 @@ test-plain-install:
       -e CI_PROJECT_DIR=/src
       -e CI_COMMIT_TAG=$CI_COMMIT_TAG
       jrei/systemd-ubuntu:20.04
-    - docker exec -t systemd-ubuntu /bin/bash /src/.gitlab-ci/test.sh
+    - docker exec -t systemd-ubuntu /bin/bash /src/.gitlab-ci/test-install.sh
+  only:
+    - tags
+
+test-update:
+  stage: test
+  image: docker:latest
+  services:
+    - docker:dind
+  script:
+    - docker run
+      -d
+      --name systemd-ubuntu
+      --privileged
+      -v /sys/fs/cgroup:/sys/fs/cgroup:ro
+      -v $CI_PROJECT_DIR:/src
+      -e CI_PROJECT_DIR=/src
+      -e CI_COMMIT_TAG=$CI_COMMIT_TAG
+      jrei/systemd-ubuntu:20.04
+    - docker exec -t systemd-ubuntu /bin/bash /src/.gitlab-ci/test-update.sh
   only:
     - tags
 
diff --git a/.gitlab-ci/data.tgz b/.gitlab-ci/data.tgz
new file mode 100644
index 0000000..62037dc
Binary files /dev/null and b/.gitlab-ci/data.tgz differ
diff --git a/.gitlab-ci/test-install.sh b/.gitlab-ci/test-install.sh
new file mode 100644
index 0000000..d57b20e
--- /dev/null
+++ b/.gitlab-ci/test-install.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+. "${CI_PROJECT_DIR}/.gitlab-ci/test.sh"
+
+apt-get -qqy install "${CI_PROJECT_DIR}/gitea_${VERSION}-${PATCHLEVEL}_amd64.deb"
+start_gitea
diff --git a/.gitlab-ci/test-update.sh b/.gitlab-ci/test-update.sh
new file mode 100644
index 0000000..91e949a
--- /dev/null
+++ b/.gitlab-ci/test-update.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+. "${CI_PROJECT_DIR}/.gitlab-ci/test.sh"
+
+curl -sL -o /etc/apt/trusted.gpg.d/morph027-gitea.asc https://packaging.gitlab.io/gitea/gpg.key
+echo "deb [arch=amd64] https://packaging.gitlab.io/gitea gitea main" > /etc/apt/sources.list.d/morph027-gitea.list
+apt-get -qq update
+apt-get -qqy install gitea
+tar -C / -xzf "/${CI_PROJECT_DIR}/.gitlab-ci/data.tgz"
+chown -R gitea: /var/lib/gitea /etc/gitea
+start_gitea
+apt-get -qqy install "${CI_PROJECT_DIR}/gitea_${VERSION}-${PATCHLEVEL}_amd64.deb"
+restart_gitea
diff --git a/.gitlab-ci/test.sh b/.gitlab-ci/test.sh
index e2e3c75..3b8899d 100644
--- a/.gitlab-ci/test.sh
+++ b/.gitlab-ci/test.sh
@@ -4,10 +4,21 @@ set -e
 
 VERSION=$(echo "${CI_COMMIT_TAG#*v}" | cut -d'-' -f1)
 PATCHLEVEL=$(echo "${CI_COMMIT_TAG}" | cut -d'-' -f2)
+export VERSION PATCHLEVEL
+
+start_gitea() {
+  systemctl start gitea
+  sleep 10
+  if ! systemctl is-active gitea; then
+    journalctl -lu gitea --no-pager
+  fi
+  curl -s localhost:3000/api/v1/version | jq -e '.version'
+}
+
+restart_gitea() {
+  systemctl stop gitea
+  start_gitea
+}
+
 apt-get -qq update
-apt-get -qqy install "${CI_PROJECT_DIR}/gitea_${VERSION}-${PATCHLEVEL}_amd64.deb"
-systemctl start gitea
-sleep 10
-if ! systemctl is-active gitea; then
-  journalctl -lu gitea --no-pager
-fi
+apt-get -qqy install curl jq