diff --git a/docs/_inc/_install-browser-reqs-classic-ui.md b/docs/_inc/_install-browser-reqs-classic-ui.md
index 3c5834310d..b92b080f9b 100644
--- a/docs/_inc/_install-browser-reqs-classic-ui.md
+++ b/docs/_inc/_install-browser-reqs-classic-ui.md
@@ -1,7 +1,7 @@
 You can view the list of supported browsers for Classic UI at [Browserslist](https://browsersl.ist/#q=%3E%3D+0.5%25%0Alast+2+major+versions%0Anot+dead%0AChrome+%3E%3D+60%0AFirefox+%3E%3D+60%0AFirefox+ESR%0AiOS+%3E%3D+12%0ASafari+%3E%3D+12%0Anot+Explorer+%3C%3D+11).
 
 The supported web browsers for Classic UI are set according to [Bootstrap](https://getbootstrap.com/docs/5.3/getting-started/browsers-devices/#supported-browsers).
-The following code snippet is the [browserslist configuration for Bootstrap 5.3.3](https://github.com/twbs/bootstrap/blob/v5.3.3/.browserslistrc).
+The following code snippet is the [browserslist configuration for Bootstrap 5.3.8](https://github.com/twbs/bootstrap/blob/v5.3.8/.browserslistrc).
 
 ```shell
 >= 0.5%
@@ -13,4 +13,5 @@ Firefox ESR
 iOS >= 12
 Safari >= 12
 not Explorer <= 11
+not kaios <= 2.5 # fix floating label issues in Firefox (see https://github.com/postcss/autoprefixer/issues/1533)
 ```
diff --git a/docs/install/containers/images/backend.md b/docs/install/containers/images/backend.md
index 762a2ea84e..b960ead821 100644
--- a/docs/install/containers/images/backend.md
+++ b/docs/install/containers/images/backend.md
@@ -210,6 +210,40 @@ services:
     - "5432:5432"
 ```
 
+### ZODB-PGJSONB variables
+
+[zodb-pgjsonb](https://bluedynamics.github.io/zodb-pgjsonb/) is a PostgreSQL based storage where ZODB pickles are converted to JSON and stored in JSONB columns in PostgreSQL.
+
+The available variables are the following:
+
+| Environment variable | Description | RelStorage option | Default value |
+| --- | --- | --- | --- |
+| `ZODB_PGJSONB_DSN` | {ref}`containers-images-backend-pgsjonb-dsn-label` for the database interface | | |
+| `ZODB_PGJSONB_HISTORY_PRESERVING` | History preserving mode | `history-preserving` | `false` |
+| `ZODB_PGJSONB_Z3BLOBS_ENABLED` | Enable sending blobs to S3 | - | `false` |
+| `ZODB_PGJSONB_S3BLOBS_ENDPOINT_URL` | S3 endpoint url | `s3-endpoint-url` | `` required if ZODB_PGJSONB_Z3BLOBS_ENABLED=true|
+| `ZODB_PGJSONB_S3BLOBS_BUCKET_NAME` | S3 bucket name | `s3-bucket-name` | `` required if ZODB_PGJSONB_Z3BLOBS_ENABLED=true|
+| `ZODB_PGJSONB_S3BLOBS_ACCESS_KEY` | S3 access key | `s3-access-key` | `` required if ZODB_PGJSONB_Z3BLOBS_ENABLED=true|
+| `ZODB_PGJSONB_S3BLOBS_SECRET_KEY` | S3 secret key | `s3-secret-key` | `` required if ZODB_PGJSONB_Z3BLOBS_ENABLED=true|
+| `ZODB_PGJSONB_S3BLOBS_USE_SSL` | Whether to use SSL when connecting to the S3 endpoint | `s3-use-ssl` | `false` |
+| `ZODB_PGJSONB_S3BLOBS_REGION` | S3 region | `s3-region` | `none` |
+| `ZODB_PGJSONB_S3BLOBS_PREFIX` | S3 prefix | `s3-prefix` | `` |
+| `ZODB_PGJSONB_S3BLOBS_THRESHOLD` | Blobs bigger in size than this value will be uploaded to S3 | `blob-threshold` | `100KB` |
+| `ZODB_PGJSONB_S3BLOBS_CACHE_DIR` | Local dir for a LRU blob-cache | `blob-cache-dir` | `auto` |
+| `ZODB_PGJSONB_S3BLOBS_CACHE_SIZE` | Local cache-dir max size | `blob-cache-size` | `1GB` |
+
+
+(containers-images-backend-pgsjonb-dsn-label)=
+
+#### PGJSONB DSN
+
+A valid PostgreSQL DSN is required with a list of parameters separated with whitespace.
+A typical DSN looks like the following:
+
+```console
+dbname='zodb' user='username' host='localhost' password='pass' port='5431'
+```
+
 
 ### CORS variables