diff --git a/docs/configuration/overview.md b/docs/configuration/overview.md
index bfb187ab..ae0f5451 100644
--- a/docs/configuration/overview.md
+++ b/docs/configuration/overview.md
@@ -48,6 +48,8 @@ REDIS_PASSWORD='topsecret'
 
 JWT_PRIVATE_KEY='topsecret' # (8)!
 
+SECRET_KEY='anothertopsecret' # (15)!
+
 # SeaDoc
 ENABLE_SEADOC='false'
 SEADOC_PORT=''
@@ -77,7 +79,7 @@ SEATABLE_TEMPLATE_TABLE_NAME=
 SEATABLE_ENABLE_CREATE_BASE_FROM_TEMPLATE=
 
 # Logging
-SEATABLE_LOG_LEVEL=INFO # (10)!
+LOG_LEVEL=INFO # (10)!
 
 # Docker Images
 # You can use these variables to override the default images
@@ -104,6 +106,7 @@ SEATABLE_HELP_LINK=https://seatable.com/help/ # (11)!
 12. Please refer to [Email Sending](./sending-email.md) for more information.
 13. Please refer to [Python Pipeline](../installation/components/python-pipeline.md) for more information.
 14. Please refer to [SeaTable AI](../installation/components/seatable-ai.md) for more information.
+15. This secret key is used to Django in SeaTable.
 
 <!--
 TODO: add environment variables for cluster setup!
diff --git a/docs/installation/advanced/s3.md b/docs/installation/advanced/s3.md
index dff13830..6133f4e0 100644
--- a/docs/installation/advanced/s3.md
+++ b/docs/installation/advanced/s3.md
@@ -93,7 +93,7 @@ While the previous approach [via configuration files](#configuration-files) is s
 
 <!-- md:version 6.1 -->
 
-To enable S3 storage for base snapshots, files and pictures, add `seatable-s3.yml` to the `COMPOSE_FILE` variable inside your `.env` file.
+To enable S3 storage for base snapshots, files, pictures and avatars, add `seatable-s3.yml` to the `COMPOSE_FILE` variable inside your `.env` file.
 This instructs Docker-Compose to extend the definition of the `seatable-server` service defined inside `seatable-server.yml`.
 
 
@@ -108,6 +108,7 @@ Afterwards, you must configure a few environment variables inside your `.env` fi
     S3_COMMIT_BUCKET=''
     S3_FS_BUCKET=''
     S3_BLOCK_BUCKET=''
+    S3_AVATAR_BUCKET=''
     S3_KEY_ID=''
     S3_SECRET_KEY=''
     ```
@@ -121,6 +122,7 @@ Afterwards, you must configure a few environment variables inside your `.env` fi
     S3_COMMIT_BUCKET=''
     S3_FS_BUCKET=''
     S3_BLOCK_BUCKET=''
+    S3_AVATAR_BUCKET=''
     S3_HOST='sos-de-fra-1.exo.io'
     S3_KEY_ID=''
     S3_SECRET_KEY=''
@@ -136,6 +138,7 @@ Afterwards, you must configure a few environment variables inside your `.env` fi
     S3_COMMIT_BUCKET=''
     S3_FS_BUCKET=''
     S3_BLOCK_BUCKET=''
+    S3_AVATAR_BUCKET=''
     S3_HOST='fsn1.your-objectstorage.com'
     S3_KEY_ID=''
     S3_SECRET_KEY=''
@@ -151,6 +154,7 @@ Afterwards, you must configure a few environment variables inside your `.env` fi
     S3_COMMIT_BUCKET=''
     S3_FS_BUCKET=''
     S3_BLOCK_BUCKET=''
+    S3_AVATAR_BUCKET=''
     S3_HOST=''
     S3_KEY_ID=''
     S3_SECRET_KEY=''
@@ -394,7 +398,7 @@ S3 Object storage for file and picture columns is configured in `/opt/seatable-s
         memcached_options = --SERVER=memcached --POOL-MIN=10 --POOL-MAX=100
         ```
 
-## S3 for avatars
+### S3 for avatars
 
 <!-- md:version 4.4 -->
 
diff --git a/docs/installation/advanced/seatable-ai-standalone.md b/docs/installation/advanced/seatable-ai-standalone.md
index 944f653d..f639d2a9 100644
--- a/docs/installation/advanced/seatable-ai-standalone.md
+++ b/docs/installation/advanced/seatable-ai-standalone.md
@@ -37,6 +37,8 @@ REDIS_PASSWORD=
 # This private key must have the same value as the JWT_PRIVATE_KEY variable on other SeaTable nodes
 JWT_PRIVATE_KEY=
 
+SECRET_KEY=
+
 # Public URL of your SeaTable server
 SEATABLE_SERVER_URL=https://seatable.your-domain.com
 
diff --git a/docs/installation/basic-setup.md b/docs/installation/basic-setup.md
index 96d930a1..6fe5adbb 100644
--- a/docs/installation/basic-setup.md
+++ b/docs/installation/basic-setup.md
@@ -100,6 +100,7 @@ Now use the command line tool `pwgen` to create secure passwords for your _admin
     sed -i "s/^MARIADB_PASSWORD=.*/MARIADB_PASSWORD=$(pwgen 40 1)/" .env
     sed -i "s/^REDIS_PASSWORD=.*/REDIS_PASSWORD=$(pwgen 40 1)/" .env
     sed -i "s/^JWT_PRIVATE_KEY=.*/JWT_PRIVATE_KEY=$(pwgen 40 1)/" .env
+    sed -i "s/^SECRET_KEY=.*/SECRET_KEY=$(pwgen 40 1)/" .env
 
 Alternatively, you can manually add your own passwords.
 
@@ -150,6 +151,8 @@ Continue setting up your SeaTable server by adjusting only three more variables.
 
     # shared secret for secure communication
     JWT_PRIVATE_KEY='anothersecret'
+
+    SECRET_KEY='anothertopsecret'
     ```
 
     1.  COMPOSE_FILE is a comma-separated list **without spaces**. This list defines which components the server runs. Leave `caddy.yml` and `seatable-server.yml` at the beginning. You will add more components at a later time.
diff --git a/docs/installation/cluster/basic-setup-with-external-services.md b/docs/installation/cluster/basic-setup-with-external-services.md
index 56ad8216..6878da59 100644
--- a/docs/installation/cluster/basic-setup-with-external-services.md
+++ b/docs/installation/cluster/basic-setup-with-external-services.md
@@ -49,6 +49,8 @@ Follow the [installation instructions for a single node](../basic-setup.md) up t
 
     # shared secret for secure communication
     JWT_PRIVATE_KEY='topsecret'
+
+    SECRET_KEY='anothertopsecret'
     ```
 
 ??? success "Remove Redis and Mariadb from your YAML file."