diff --git a/docker-compose.tmpl.yml b/docker-compose.tmpl.yml
index f7f0a5f..03aadcc 100644
--- a/docker-compose.tmpl.yml
+++ b/docker-compose.tmpl.yml
@@ -175,7 +175,7 @@ services:
         ipv4_address: 10.7.7.18
 
   redis:
-    image: redis:7.0-rc-alpine
+    image: redis:7.0-alpine
     restart: unless-stopped
     healthcheck:
       test: ["CMD", "redis-cli", "ping"]
@@ -230,7 +230,7 @@ services:
       # TODO: add mediasoup IPv6
       # TODO: can listen to 0.0.0.0 for nat support? https://github.com/versatica/mediasoup/issues/487
     {{ if .Env.EXTERNAL_IPv6 }}
-      MS_WEBRTC_LISTEN_IPS: '[{"ip":"${EXTERNAL_IPv6}", "announcedIp":"${EXTERNAL_IPv6}"}, {"ip":"${EXTERNAL_IPv4}", "announcedIp":"${EXTERNAL_IPv4}"}]'
+      MS_WEBRTC_LISTEN_IPS: '[{"ip":"{{ .Env.EXTERNAL_IPv6 }}", "announcedIp":"{{ .Env.EXTERNAL_IPv6 }}"}, {"ip":"${EXTERNAL_IPv4}", "announcedIp":"${EXTERNAL_IPv4}"}]'
     {{else}}
       MS_WEBRTC_LISTEN_IPS: '[{"ip":"${EXTERNAL_IPv4}", "announcedIp":"${EXTERNAL_IPv4}"}]'
     {{end}}
@@ -436,7 +436,7 @@ services:
 {{ if isTrue .Env.ENABLE_PROMETHEUS_EXPORTER }}
   # prometheus
   prometheus-exporter:
-    image: greenstatic/bigbluebutton-exporter:v0.7.0-preview2
+    image: greenstatic/bigbluebutton-exporter:latest
     restart: unless-stopped
     environment:
       API_BASE_URL: http://10.7.7.1:48087/bigbluebutton/api/
diff --git a/mod/etherpad/Dockerfile b/mod/etherpad/Dockerfile
index 9462f8e..c9f7ddd 100644
--- a/mod/etherpad/Dockerfile
+++ b/mod/etherpad/Dockerfile
@@ -1,4 +1,4 @@
-FROM etherpad/etherpad:1.8.17
+FROM etherpad/etherpad:1.8.18
 
 USER root
 
diff --git a/mod/webhooks/Dockerfile b/mod/webhooks/Dockerfile
index 48b0e36..088e2b9 100644
--- a/mod/webhooks/Dockerfile
+++ b/mod/webhooks/Dockerfile
@@ -3,7 +3,7 @@ FROM node:14.18.3-bullseye-slim AS builder
 
 RUN apt-get update && apt-get install -y git wget
 
-RUN  wget -q https://github.com/mikefarah/yq/releases/download/v4.20.1/yq_linux_amd64 -O /usr/bin/yq \
+RUN  wget -q https://github.com/mikefarah/yq/releases/download/v4.25.1/yq_linux_amd64 -O /usr/bin/yq \
     && chmod +x /usr/bin/yq
 
 COPY ./bbb-webhooks /bbb-webhooks
diff --git a/scripts/checkout-submodules b/scripts/checkout-submodules
new file mode 100755
index 0000000..6724ea0
--- /dev/null
+++ b/scripts/checkout-submodules
@@ -0,0 +1,27 @@
+#!/bin/bash
+
+# checkouts submodules based on the tag
+# provided in `tags.env`
+
+
+set -e
+cd "$(dirname "$0")/.."
+
+export $(cat tags.env | sed 's/#.*//g' | xargs)
+
+function checkout {
+    path=$1
+    ref=$2
+    pushd $path
+    git checkout $ref
+    popd > /dev/null
+}
+
+checkout mod/webrtc-sfu/bbb-webrtc-sfu $TAG_WEBRTC_SFU
+checkout mod/nginx/bbb-playback $TAG_PLAYBACK
+checkout mod/bbb-pads/bbb-pads $TAG_PADS
+checkout mod/webhooks/bbb-webhooks $TAG_WEBHOOKS
+
+echo ""
+echo "# git submodule"
+git submodule
\ No newline at end of file
diff --git a/tags.env b/tags.env
index 502017d..d094962 100644
--- a/tags.env
+++ b/tags.env
@@ -7,16 +7,21 @@
 BBB_BUILD_TAG=v2022-03-30
 
 # https://github.com/bigbluebutton/bigbluebutton
-TAG_COMMON_MESSAGE=v2.5.0-beta.2
-TAG_APPS_AKKA=v2.5.0-beta.2
-TAG_FSESL_AKKA=v2.5.0-beta.2
-TAG_BBB_WEB=v2.5.0-beta.2
-TAG_HTML5=v2.5.0-beta.2
-TAG_RECORDINGS=v2.5.0-beta.2
+TAG_COMMON_MESSAGE=v2.5.0-rc.1
+TAG_APPS_AKKA=v2.5.0-rc.1
+TAG_FSESL_AKKA=v2.5.0-rc.1
+TAG_BBB_WEB=v2.5.0-rc.1
+TAG_HTML5=v2.5.0-rc.1
+TAG_RECORDINGS=v2.5.0-rc.1
 
-TAG_LEARNING_DASHBOARD=v2.5.0-beta.2
-TAG_FS_CONFIG=v2.5.0-beta.2
+TAG_LEARNING_DASHBOARD=v2.5.0-rc.1
+TAG_FS_CONFIG=v2.5.0-rc.1
 
 
-IMAGE_NODE=node:14.19.1-bullseye-slim
-# TODO: variable still unused
\ No newline at end of file
+# individual git submodules
+# use `./scripts/checkout-submodules` to ensure, that the submodules
+# match the provided tags here
+TAG_WEBRTC_SFU=v2.8.1
+TAG_WEBHOOKS=v2.5.0
+TAG_PLAYBACK=v4.0.0
+TAG_PADS=v1.1.0
\ No newline at end of file