diff --git a/.gitea/workflows/epubreader.yml b/.gitea/workflows/epubreader.yml
index 4e0085d..86bf8a8 100644
--- a/.gitea/workflows/epubreader.yml
+++ b/.gitea/workflows/epubreader.yml
@@ -4,7 +4,7 @@ on: [push]
 jobs:
   nextcloud-22:
     runs-on: ubuntu-latest
-    container: nextcloud:27
+    container: nextcloud:28
     steps:
       - run: apt-get update
       - run: apt-get install -y git nodejs
@@ -18,7 +18,7 @@ jobs:
 
   nextcloud-27:
     runs-on: ubuntu-latest
-    container: nextcloud:27
+    container: nextcloud:28
     steps:
       - run: apt-get update
       - run: apt-get install -y git nodejs
diff --git a/Dockerfile b/Dockerfile
index a0293f1..4d656e6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM nextcloud:27
+FROM nextcloud:28
 
 ENV NEXTCLOUD_UPDATE 1
 ENV NEXTCLOUD_ADMIN_USER epubreader