diff --git a/Dockerfile b/Dockerfile
index 184020d..3d6d03b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-FROM ghcr.io/linuxserver/baseimage-alpine-nginx:3.19
+FROM ghcr.io/linuxserver/baseimage-alpine-nginx:3.20
 
 # set version label
 ARG BUILD_DATE
@@ -39,6 +39,7 @@ RUN \
   tar xf \
     /tmp/dokuwiki.tar.gz -C \
     /app/www/public --strip-components=1 && \
+  printf "Linuxserver.io version: ${VERSION}\nBuild-date: ${BUILD_DATE}" > /build_version && \
   echo "**** cleanup ****" && \
   apk del --purge \
     build-dependencies && \
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index 5eafe7c..2f797bc 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-FROM ghcr.io/linuxserver/baseimage-alpine-nginx:arm64v8-3.19
+FROM ghcr.io/linuxserver/baseimage-alpine-nginx:arm64v8-3.20
 
 # set version label
 ARG BUILD_DATE
@@ -39,6 +39,7 @@ RUN \
   tar xf \
     /tmp/dokuwiki.tar.gz -C \
     /app/www/public --strip-components=1 && \
+  printf "Linuxserver.io version: ${VERSION}\nBuild-date: ${BUILD_DATE}" > /build_version && \
   echo "**** cleanup ****" && \
   apk del --purge \
     build-dependencies && \
diff --git a/Jenkinsfile b/Jenkinsfile
index ff1b25c..165d73c 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -30,8 +30,8 @@ pipeline {
     CI_WEB='true'
     CI_PORT='80'
     CI_SSL='false'
-    CI_DELAY='120'
-    CI_DOCKERENV='TZ=US/Pacific'
+    CI_DELAY='60'
+    CI_DOCKERENV=''
     CI_AUTH=''
     CI_WEBPATH=''
   }
diff --git a/README.md b/README.md
index 0bf7fc0..e06921b 100644
--- a/README.md
+++ b/README.md
@@ -274,6 +274,7 @@ Once registered you can define the dockerfile to use with `-f Dockerfile.aarch64
 
 ## Versions
 
+* **31.05.24:** - Rebase to Alpine 3.20. Existing users should update their nginx confs to avoid http2 deprecation warnings.
 * **23.01.24:** - Rebase to Alpine 3.19 with php 8.3.
 * **25.12.23:** - Existing users should update: site-confs/default.conf - Cleanup default site conf.
 * **21.07.23:** - Update built-in plugins on container update.
diff --git a/jenkins-vars.yml b/jenkins-vars.yml
index a44d89f..d4657a4 100644
--- a/jenkins-vars.yml
+++ b/jenkins-vars.yml
@@ -7,7 +7,6 @@ custom_version_command: "docker run --rm alpine:latest sh -c 'apk add xmlstarlet
 release_type: stable
 release_tag: latest
 ls_branch: master
-build_armhf: false
 repo_vars:
   - BUILD_VERSION_ARG = 'DOKUWIKI_RELEASE'
   - LS_USER = 'linuxserver'
@@ -22,7 +21,7 @@ repo_vars:
   - CI_WEB='true'
   - CI_PORT='80'
   - CI_SSL='false'
-  - CI_DELAY='120'
-  - CI_DOCKERENV='TZ=US/Pacific'
+  - CI_DELAY='60'
+  - CI_DOCKERENV=''
   - CI_AUTH=''
   - CI_WEBPATH=''
diff --git a/readme-vars.yml b/readme-vars.yml
index 66773c7..28525df 100755
--- a/readme-vars.yml
+++ b/readme-vars.yml
@@ -16,9 +16,6 @@ available_architectures:
 # container parameters
 common_param_env_vars_enabled: true
 param_container_name: "{{ project_name }}"
-param_usage_include_env: true
-param_env_vars:
-  - { env_var: "TZ", env_value: "Europe/London", desc: "Specify a timezone to use EG Europe/London." }
 param_usage_include_vols: true
 param_volumes:
   - { vol_path: "/config", vol_host_path: "/path/to/{{ project_name }}/config", desc: "Persistent config files" }
@@ -27,7 +24,6 @@ param_ports:
   - { external_port: "80", internal_port: "80", port_desc: "Application HTTP Port" }
 
 # optional container parameters
-opt_param_usage_include_env: false
 opt_param_env_vars:
   - { env_var: "APP_URL", env_value: "/dokuwiki", desc: "Specify an APP_URL to append to your root location, helpful for subfolder reverse proxy setups.  Does not take effect until after first restart following setup." }
 opt_param_usage_include_ports: true
@@ -39,6 +35,7 @@ app_setup_block: |
   Upon first install go to `http://$IP:$PORT/install.php` once you have completed the setup, restart the container, login as admin and set "Use nice URLs" in the `admin/Configuration Settings` panel to `.htaccess` and tick `Use slash as namespace separator in URLs` to enable [nice URLs](https://www.dokuwiki.org/rewrite) you will find the webui at `http://$IP:$PORT/`, for more info see [{{ project_name|capitalize }}]({{ project_url }})
 # changelog
 changelogs:
+  - { date: "31.05.24:", desc: "Rebase to Alpine 3.20. Existing users should update their nginx confs to avoid http2 deprecation warnings."}
   - { date: "23.01.24:", desc: "Rebase to Alpine 3.19 with php 8.3."}
   - { date: "25.12.23:", desc: "Existing users should update: site-confs/default.conf - Cleanup default site conf." }
   - { date: "21.07.23:", desc: "Update built-in plugins on container update." }
diff --git a/root/defaults/nginx/site-confs/default.conf.sample b/root/defaults/nginx/site-confs/default.conf.sample
index f32980a..ee59423 100644
--- a/root/defaults/nginx/site-confs/default.conf.sample
+++ b/root/defaults/nginx/site-confs/default.conf.sample
@@ -1,11 +1,8 @@
-## Version 2023/12/25 - Changelog: https://github.com/linuxserver/docker-dokuwiki/commits/master/root/defaults/nginx/site-confs/default.conf.sample
+## Version 2024/05/31 - Changelog: https://github.com/linuxserver/docker-dokuwiki/commits/master/root/defaults/nginx/site-confs/default.conf.sample
 
 server {
-    listen 80 default_server;
-    listen [::]:80 default_server;
-
-    listen 443 ssl http2 default_server;
-    listen [::]:443 ssl http2 default_server;
+    listen *:80 default_server;
+    listen *:443 ssl default_server;
 
     server_name _;