diff --git a/25/apache/Dockerfile b/25/apache/Dockerfile
index 93f6214c..1f2eca65 100644
--- a/25/apache/Dockerfile
+++ b/25/apache/Dockerfile
@@ -130,7 +130,7 @@ RUN a2enmod headers rewrite remoteip ;\
     } > /etc/apache2/conf-available/remoteip.conf;\
     a2enconf remoteip
 
-ENV NEXTCLOUD_VERSION 25.0.8
+ENV NEXTCLOUD_VERSION 25.0.9
 
 RUN set -ex; \
     fetchDeps=" \
@@ -140,8 +140,8 @@ RUN set -ex; \
     apt-get update; \
     apt-get install -y --no-install-recommends $fetchDeps; \
     \
-    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-25.0.8.tar.bz2"; \
-    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-25.0.8.tar.bz2.asc"; \
+    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-25.0.9.tar.bz2"; \
+    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-25.0.9.tar.bz2.asc"; \
     export GNUPGHOME="$(mktemp -d)"; \
 # gpg key from https://nextcloud.com/nextcloud.asc
     gpg --batch --keyserver keyserver.ubuntu.com --recv-keys 28806A878AE423A28372792ED75899B9A724937A; \
diff --git a/25/apache/entrypoint.sh b/25/apache/entrypoint.sh
index 941dc3ee..4c85f6ad 100755
--- a/25/apache/entrypoint.sh
+++ b/25/apache/entrypoint.sh
@@ -157,6 +157,11 @@ if expr "$1" : "apache" 1>/dev/null || [ "$1" = "php-fpm" ] || [ "${NEXTCLOUD_UP
         if version_greater "$image_version" "$installed_version"; then
             echo "Initializing nextcloud $image_version ..."
             if [ "$installed_version" != "0.0.0.0" ]; then
+                if [ "${image_version%%.*}" -gt "$((${installed_version%%.*} + 1))" ]; then
+                    echo "Can't start Nextcloud because upgrading from $installed_version to $image_version is not supported."
+                    echo "It is only possible to upgrade one major version at a time. For example, if you want to upgrade from version 14 to 16, you will have to upgrade from version 14 to 15, then from 15 to 16."
+                    exit 1
+                fi
                 echo "Upgrading nextcloud from $installed_version ..."
                 run_as 'php /var/www/html/occ app:list' | sed -n "/Enabled:/,/Disabled:/p" > /tmp/list_before
             fi
diff --git a/25/fpm-alpine/Dockerfile b/25/fpm-alpine/Dockerfile
index 71c0e05b..ebe772f1 100644
--- a/25/fpm-alpine/Dockerfile
+++ b/25/fpm-alpine/Dockerfile
@@ -110,7 +110,7 @@ RUN { \
 VOLUME /var/www/html
 
 
-ENV NEXTCLOUD_VERSION 25.0.8
+ENV NEXTCLOUD_VERSION 25.0.9
 
 RUN set -ex; \
     apk add --no-cache --virtual .fetch-deps \
@@ -118,8 +118,8 @@ RUN set -ex; \
         gnupg \
     ; \
     \
-    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-25.0.8.tar.bz2"; \
-    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-25.0.8.tar.bz2.asc"; \
+    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-25.0.9.tar.bz2"; \
+    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-25.0.9.tar.bz2.asc"; \
     export GNUPGHOME="$(mktemp -d)"; \
 # gpg key from https://nextcloud.com/nextcloud.asc
     gpg --batch --keyserver keyserver.ubuntu.com  --recv-keys 28806A878AE423A28372792ED75899B9A724937A; \
diff --git a/25/fpm-alpine/entrypoint.sh b/25/fpm-alpine/entrypoint.sh
index 941dc3ee..4c85f6ad 100755
--- a/25/fpm-alpine/entrypoint.sh
+++ b/25/fpm-alpine/entrypoint.sh
@@ -157,6 +157,11 @@ if expr "$1" : "apache" 1>/dev/null || [ "$1" = "php-fpm" ] || [ "${NEXTCLOUD_UP
         if version_greater "$image_version" "$installed_version"; then
             echo "Initializing nextcloud $image_version ..."
             if [ "$installed_version" != "0.0.0.0" ]; then
+                if [ "${image_version%%.*}" -gt "$((${installed_version%%.*} + 1))" ]; then
+                    echo "Can't start Nextcloud because upgrading from $installed_version to $image_version is not supported."
+                    echo "It is only possible to upgrade one major version at a time. For example, if you want to upgrade from version 14 to 16, you will have to upgrade from version 14 to 15, then from 15 to 16."
+                    exit 1
+                fi
                 echo "Upgrading nextcloud from $installed_version ..."
                 run_as 'php /var/www/html/occ app:list' | sed -n "/Enabled:/,/Disabled:/p" > /tmp/list_before
             fi
diff --git a/25/fpm/Dockerfile b/25/fpm/Dockerfile
index cb3bffb9..f3889f1c 100644
--- a/25/fpm/Dockerfile
+++ b/25/fpm/Dockerfile
@@ -122,7 +122,7 @@ RUN { \
 VOLUME /var/www/html
 
 
-ENV NEXTCLOUD_VERSION 25.0.8
+ENV NEXTCLOUD_VERSION 25.0.9
 
 RUN set -ex; \
     fetchDeps=" \
@@ -132,8 +132,8 @@ RUN set -ex; \
     apt-get update; \
     apt-get install -y --no-install-recommends $fetchDeps; \
     \
-    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-25.0.8.tar.bz2"; \
-    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-25.0.8.tar.bz2.asc"; \
+    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-25.0.9.tar.bz2"; \
+    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-25.0.9.tar.bz2.asc"; \
     export GNUPGHOME="$(mktemp -d)"; \
 # gpg key from https://nextcloud.com/nextcloud.asc
     gpg --batch --keyserver keyserver.ubuntu.com --recv-keys 28806A878AE423A28372792ED75899B9A724937A; \
diff --git a/25/fpm/entrypoint.sh b/25/fpm/entrypoint.sh
index 941dc3ee..4c85f6ad 100755
--- a/25/fpm/entrypoint.sh
+++ b/25/fpm/entrypoint.sh
@@ -157,6 +157,11 @@ if expr "$1" : "apache" 1>/dev/null || [ "$1" = "php-fpm" ] || [ "${NEXTCLOUD_UP
         if version_greater "$image_version" "$installed_version"; then
             echo "Initializing nextcloud $image_version ..."
             if [ "$installed_version" != "0.0.0.0" ]; then
+                if [ "${image_version%%.*}" -gt "$((${installed_version%%.*} + 1))" ]; then
+                    echo "Can't start Nextcloud because upgrading from $installed_version to $image_version is not supported."
+                    echo "It is only possible to upgrade one major version at a time. For example, if you want to upgrade from version 14 to 16, you will have to upgrade from version 14 to 15, then from 15 to 16."
+                    exit 1
+                fi
                 echo "Upgrading nextcloud from $installed_version ..."
                 run_as 'php /var/www/html/occ app:list' | sed -n "/Enabled:/,/Disabled:/p" > /tmp/list_before
             fi
diff --git a/26/apache/Dockerfile b/26/apache/Dockerfile
index 0ab69483..c93c55f9 100644
--- a/26/apache/Dockerfile
+++ b/26/apache/Dockerfile
@@ -131,7 +131,7 @@ RUN a2enmod headers rewrite remoteip ;\
     } > /etc/apache2/conf-available/remoteip.conf;\
     a2enconf remoteip
 
-ENV NEXTCLOUD_VERSION 26.0.3
+ENV NEXTCLOUD_VERSION 26.0.4
 
 RUN set -ex; \
     fetchDeps=" \
@@ -141,8 +141,8 @@ RUN set -ex; \
     apt-get update; \
     apt-get install -y --no-install-recommends $fetchDeps; \
     \
-    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-26.0.3.tar.bz2"; \
-    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-26.0.3.tar.bz2.asc"; \
+    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-26.0.4.tar.bz2"; \
+    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-26.0.4.tar.bz2.asc"; \
     export GNUPGHOME="$(mktemp -d)"; \
 # gpg key from https://nextcloud.com/nextcloud.asc
     gpg --batch --keyserver keyserver.ubuntu.com --recv-keys 28806A878AE423A28372792ED75899B9A724937A; \
diff --git a/26/apache/entrypoint.sh b/26/apache/entrypoint.sh
index 941dc3ee..4c85f6ad 100755
--- a/26/apache/entrypoint.sh
+++ b/26/apache/entrypoint.sh
@@ -157,6 +157,11 @@ if expr "$1" : "apache" 1>/dev/null || [ "$1" = "php-fpm" ] || [ "${NEXTCLOUD_UP
         if version_greater "$image_version" "$installed_version"; then
             echo "Initializing nextcloud $image_version ..."
             if [ "$installed_version" != "0.0.0.0" ]; then
+                if [ "${image_version%%.*}" -gt "$((${installed_version%%.*} + 1))" ]; then
+                    echo "Can't start Nextcloud because upgrading from $installed_version to $image_version is not supported."
+                    echo "It is only possible to upgrade one major version at a time. For example, if you want to upgrade from version 14 to 16, you will have to upgrade from version 14 to 15, then from 15 to 16."
+                    exit 1
+                fi
                 echo "Upgrading nextcloud from $installed_version ..."
                 run_as 'php /var/www/html/occ app:list' | sed -n "/Enabled:/,/Disabled:/p" > /tmp/list_before
             fi
diff --git a/26/fpm-alpine/Dockerfile b/26/fpm-alpine/Dockerfile
index 1a58b2b3..f3be4c5f 100644
--- a/26/fpm-alpine/Dockerfile
+++ b/26/fpm-alpine/Dockerfile
@@ -111,7 +111,7 @@ RUN { \
 VOLUME /var/www/html
 
 
-ENV NEXTCLOUD_VERSION 26.0.3
+ENV NEXTCLOUD_VERSION 26.0.4
 
 RUN set -ex; \
     apk add --no-cache --virtual .fetch-deps \
@@ -119,8 +119,8 @@ RUN set -ex; \
         gnupg \
     ; \
     \
-    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-26.0.3.tar.bz2"; \
-    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-26.0.3.tar.bz2.asc"; \
+    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-26.0.4.tar.bz2"; \
+    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-26.0.4.tar.bz2.asc"; \
     export GNUPGHOME="$(mktemp -d)"; \
 # gpg key from https://nextcloud.com/nextcloud.asc
     gpg --batch --keyserver keyserver.ubuntu.com  --recv-keys 28806A878AE423A28372792ED75899B9A724937A; \
diff --git a/26/fpm-alpine/entrypoint.sh b/26/fpm-alpine/entrypoint.sh
index 941dc3ee..4c85f6ad 100755
--- a/26/fpm-alpine/entrypoint.sh
+++ b/26/fpm-alpine/entrypoint.sh
@@ -157,6 +157,11 @@ if expr "$1" : "apache" 1>/dev/null || [ "$1" = "php-fpm" ] || [ "${NEXTCLOUD_UP
         if version_greater "$image_version" "$installed_version"; then
             echo "Initializing nextcloud $image_version ..."
             if [ "$installed_version" != "0.0.0.0" ]; then
+                if [ "${image_version%%.*}" -gt "$((${installed_version%%.*} + 1))" ]; then
+                    echo "Can't start Nextcloud because upgrading from $installed_version to $image_version is not supported."
+                    echo "It is only possible to upgrade one major version at a time. For example, if you want to upgrade from version 14 to 16, you will have to upgrade from version 14 to 15, then from 15 to 16."
+                    exit 1
+                fi
                 echo "Upgrading nextcloud from $installed_version ..."
                 run_as 'php /var/www/html/occ app:list' | sed -n "/Enabled:/,/Disabled:/p" > /tmp/list_before
             fi
diff --git a/26/fpm/Dockerfile b/26/fpm/Dockerfile
index 3a60ed71..86eba0fe 100644
--- a/26/fpm/Dockerfile
+++ b/26/fpm/Dockerfile
@@ -123,7 +123,7 @@ RUN { \
 VOLUME /var/www/html
 
 
-ENV NEXTCLOUD_VERSION 26.0.3
+ENV NEXTCLOUD_VERSION 26.0.4
 
 RUN set -ex; \
     fetchDeps=" \
@@ -133,8 +133,8 @@ RUN set -ex; \
     apt-get update; \
     apt-get install -y --no-install-recommends $fetchDeps; \
     \
-    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-26.0.3.tar.bz2"; \
-    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-26.0.3.tar.bz2.asc"; \
+    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-26.0.4.tar.bz2"; \
+    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-26.0.4.tar.bz2.asc"; \
     export GNUPGHOME="$(mktemp -d)"; \
 # gpg key from https://nextcloud.com/nextcloud.asc
     gpg --batch --keyserver keyserver.ubuntu.com --recv-keys 28806A878AE423A28372792ED75899B9A724937A; \
diff --git a/26/fpm/entrypoint.sh b/26/fpm/entrypoint.sh
index 941dc3ee..4c85f6ad 100755
--- a/26/fpm/entrypoint.sh
+++ b/26/fpm/entrypoint.sh
@@ -157,6 +157,11 @@ if expr "$1" : "apache" 1>/dev/null || [ "$1" = "php-fpm" ] || [ "${NEXTCLOUD_UP
         if version_greater "$image_version" "$installed_version"; then
             echo "Initializing nextcloud $image_version ..."
             if [ "$installed_version" != "0.0.0.0" ]; then
+                if [ "${image_version%%.*}" -gt "$((${installed_version%%.*} + 1))" ]; then
+                    echo "Can't start Nextcloud because upgrading from $installed_version to $image_version is not supported."
+                    echo "It is only possible to upgrade one major version at a time. For example, if you want to upgrade from version 14 to 16, you will have to upgrade from version 14 to 15, then from 15 to 16."
+                    exit 1
+                fi
                 echo "Upgrading nextcloud from $installed_version ..."
                 run_as 'php /var/www/html/occ app:list' | sed -n "/Enabled:/,/Disabled:/p" > /tmp/list_before
             fi
diff --git a/27/apache/Dockerfile b/27/apache/Dockerfile
index 2e0fc1b4..9d3b3e01 100644
--- a/27/apache/Dockerfile
+++ b/27/apache/Dockerfile
@@ -131,7 +131,7 @@ RUN a2enmod headers rewrite remoteip ;\
     } > /etc/apache2/conf-available/remoteip.conf;\
     a2enconf remoteip
 
-ENV NEXTCLOUD_VERSION 27.0.0
+ENV NEXTCLOUD_VERSION 27.0.1
 
 RUN set -ex; \
     fetchDeps=" \
@@ -141,8 +141,8 @@ RUN set -ex; \
     apt-get update; \
     apt-get install -y --no-install-recommends $fetchDeps; \
     \
-    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-27.0.0.tar.bz2"; \
-    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-27.0.0.tar.bz2.asc"; \
+    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-27.0.1.tar.bz2"; \
+    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-27.0.1.tar.bz2.asc"; \
     export GNUPGHOME="$(mktemp -d)"; \
 # gpg key from https://nextcloud.com/nextcloud.asc
     gpg --batch --keyserver keyserver.ubuntu.com --recv-keys 28806A878AE423A28372792ED75899B9A724937A; \
diff --git a/27/apache/entrypoint.sh b/27/apache/entrypoint.sh
index 941dc3ee..4c85f6ad 100755
--- a/27/apache/entrypoint.sh
+++ b/27/apache/entrypoint.sh
@@ -157,6 +157,11 @@ if expr "$1" : "apache" 1>/dev/null || [ "$1" = "php-fpm" ] || [ "${NEXTCLOUD_UP
         if version_greater "$image_version" "$installed_version"; then
             echo "Initializing nextcloud $image_version ..."
             if [ "$installed_version" != "0.0.0.0" ]; then
+                if [ "${image_version%%.*}" -gt "$((${installed_version%%.*} + 1))" ]; then
+                    echo "Can't start Nextcloud because upgrading from $installed_version to $image_version is not supported."
+                    echo "It is only possible to upgrade one major version at a time. For example, if you want to upgrade from version 14 to 16, you will have to upgrade from version 14 to 15, then from 15 to 16."
+                    exit 1
+                fi
                 echo "Upgrading nextcloud from $installed_version ..."
                 run_as 'php /var/www/html/occ app:list' | sed -n "/Enabled:/,/Disabled:/p" > /tmp/list_before
             fi
diff --git a/27/fpm-alpine/Dockerfile b/27/fpm-alpine/Dockerfile
index 30a33b8a..752ece2d 100644
--- a/27/fpm-alpine/Dockerfile
+++ b/27/fpm-alpine/Dockerfile
@@ -111,7 +111,7 @@ RUN { \
 VOLUME /var/www/html
 
 
-ENV NEXTCLOUD_VERSION 27.0.0
+ENV NEXTCLOUD_VERSION 27.0.1
 
 RUN set -ex; \
     apk add --no-cache --virtual .fetch-deps \
@@ -119,8 +119,8 @@ RUN set -ex; \
         gnupg \
     ; \
     \
-    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-27.0.0.tar.bz2"; \
-    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-27.0.0.tar.bz2.asc"; \
+    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-27.0.1.tar.bz2"; \
+    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-27.0.1.tar.bz2.asc"; \
     export GNUPGHOME="$(mktemp -d)"; \
 # gpg key from https://nextcloud.com/nextcloud.asc
     gpg --batch --keyserver keyserver.ubuntu.com  --recv-keys 28806A878AE423A28372792ED75899B9A724937A; \
diff --git a/27/fpm-alpine/entrypoint.sh b/27/fpm-alpine/entrypoint.sh
index 941dc3ee..4c85f6ad 100755
--- a/27/fpm-alpine/entrypoint.sh
+++ b/27/fpm-alpine/entrypoint.sh
@@ -157,6 +157,11 @@ if expr "$1" : "apache" 1>/dev/null || [ "$1" = "php-fpm" ] || [ "${NEXTCLOUD_UP
         if version_greater "$image_version" "$installed_version"; then
             echo "Initializing nextcloud $image_version ..."
             if [ "$installed_version" != "0.0.0.0" ]; then
+                if [ "${image_version%%.*}" -gt "$((${installed_version%%.*} + 1))" ]; then
+                    echo "Can't start Nextcloud because upgrading from $installed_version to $image_version is not supported."
+                    echo "It is only possible to upgrade one major version at a time. For example, if you want to upgrade from version 14 to 16, you will have to upgrade from version 14 to 15, then from 15 to 16."
+                    exit 1
+                fi
                 echo "Upgrading nextcloud from $installed_version ..."
                 run_as 'php /var/www/html/occ app:list' | sed -n "/Enabled:/,/Disabled:/p" > /tmp/list_before
             fi
diff --git a/27/fpm/Dockerfile b/27/fpm/Dockerfile
index 4d96ef55..4ed428de 100644
--- a/27/fpm/Dockerfile
+++ b/27/fpm/Dockerfile
@@ -123,7 +123,7 @@ RUN { \
 VOLUME /var/www/html
 
 
-ENV NEXTCLOUD_VERSION 27.0.0
+ENV NEXTCLOUD_VERSION 27.0.1
 
 RUN set -ex; \
     fetchDeps=" \
@@ -133,8 +133,8 @@ RUN set -ex; \
     apt-get update; \
     apt-get install -y --no-install-recommends $fetchDeps; \
     \
-    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-27.0.0.tar.bz2"; \
-    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-27.0.0.tar.bz2.asc"; \
+    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-27.0.1.tar.bz2"; \
+    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-27.0.1.tar.bz2.asc"; \
     export GNUPGHOME="$(mktemp -d)"; \
 # gpg key from https://nextcloud.com/nextcloud.asc
     gpg --batch --keyserver keyserver.ubuntu.com --recv-keys 28806A878AE423A28372792ED75899B9A724937A; \
diff --git a/27/fpm/entrypoint.sh b/27/fpm/entrypoint.sh
index 941dc3ee..4c85f6ad 100755
--- a/27/fpm/entrypoint.sh
+++ b/27/fpm/entrypoint.sh
@@ -157,6 +157,11 @@ if expr "$1" : "apache" 1>/dev/null || [ "$1" = "php-fpm" ] || [ "${NEXTCLOUD_UP
         if version_greater "$image_version" "$installed_version"; then
             echo "Initializing nextcloud $image_version ..."
             if [ "$installed_version" != "0.0.0.0" ]; then
+                if [ "${image_version%%.*}" -gt "$((${installed_version%%.*} + 1))" ]; then
+                    echo "Can't start Nextcloud because upgrading from $installed_version to $image_version is not supported."
+                    echo "It is only possible to upgrade one major version at a time. For example, if you want to upgrade from version 14 to 16, you will have to upgrade from version 14 to 15, then from 15 to 16."
+                    exit 1
+                fi
                 echo "Upgrading nextcloud from $installed_version ..."
                 run_as 'php /var/www/html/occ app:list' | sed -n "/Enabled:/,/Disabled:/p" > /tmp/list_before
             fi
diff --git a/docker-entrypoint.sh b/docker-entrypoint.sh
index 941dc3ee..4c85f6ad 100755
--- a/docker-entrypoint.sh
+++ b/docker-entrypoint.sh
@@ -157,6 +157,11 @@ if expr "$1" : "apache" 1>/dev/null || [ "$1" = "php-fpm" ] || [ "${NEXTCLOUD_UP
         if version_greater "$image_version" "$installed_version"; then
             echo "Initializing nextcloud $image_version ..."
             if [ "$installed_version" != "0.0.0.0" ]; then
+                if [ "${image_version%%.*}" -gt "$((${installed_version%%.*} + 1))" ]; then
+                    echo "Can't start Nextcloud because upgrading from $installed_version to $image_version is not supported."
+                    echo "It is only possible to upgrade one major version at a time. For example, if you want to upgrade from version 14 to 16, you will have to upgrade from version 14 to 15, then from 15 to 16."
+                    exit 1
+                fi
                 echo "Upgrading nextcloud from $installed_version ..."
                 run_as 'php /var/www/html/occ app:list' | sed -n "/Enabled:/,/Disabled:/p" > /tmp/list_before
             fi
diff --git a/latest.txt b/latest.txt
index 008c39a4..5072d435 100644
--- a/latest.txt
+++ b/latest.txt
@@ -1 +1 @@
-27.0.0
+27.0.1
diff --git a/versions.json b/versions.json
index 65c648c0..3dccf4d0 100644
--- a/versions.json
+++ b/versions.json
@@ -1,9 +1,9 @@
 {
   "27": {
     "branch": "27",
-    "version": "27.0.0",
-    "url": "https://download.nextcloud.com/server/releases/nextcloud-27.0.0.tar.bz2",
-    "ascUrl": "https://download.nextcloud.com/server/releases/nextcloud-27.0.0.tar.bz2.asc",
+    "version": "27.0.1",
+    "url": "https://download.nextcloud.com/server/releases/nextcloud-27.0.1.tar.bz2",
+    "ascUrl": "https://download.nextcloud.com/server/releases/nextcloud-27.0.1.tar.bz2.asc",
     "variants": {
       "apache": {
         "variant": "apache",
@@ -27,9 +27,9 @@
   },
   "26": {
     "branch": "26",
-    "version": "26.0.3",
-    "url": "https://download.nextcloud.com/server/releases/nextcloud-26.0.3.tar.bz2",
-    "ascUrl": "https://download.nextcloud.com/server/releases/nextcloud-26.0.3.tar.bz2.asc",
+    "version": "26.0.4",
+    "url": "https://download.nextcloud.com/server/releases/nextcloud-26.0.4.tar.bz2",
+    "ascUrl": "https://download.nextcloud.com/server/releases/nextcloud-26.0.4.tar.bz2.asc",
     "variants": {
       "apache": {
         "variant": "apache",
@@ -53,9 +53,9 @@
   },
   "25": {
     "branch": "25",
-    "version": "25.0.8",
-    "url": "https://download.nextcloud.com/server/releases/nextcloud-25.0.8.tar.bz2",
-    "ascUrl": "https://download.nextcloud.com/server/releases/nextcloud-25.0.8.tar.bz2.asc",
+    "version": "25.0.9",
+    "url": "https://download.nextcloud.com/server/releases/nextcloud-25.0.9.tar.bz2",
+    "ascUrl": "https://download.nextcloud.com/server/releases/nextcloud-25.0.9.tar.bz2.asc",
     "variants": {
       "apache": {
         "variant": "apache",