diff --git a/website/content/api-docs/secret/databases/cassandra.mdx b/website/content/api-docs/secret/databases/cassandra.mdx
index 3a9ca6922217..9e074fa93ced 100644
--- a/website/content/api-docs/secret/databases/cassandra.mdx
+++ b/website/content/api-docs/secret/databases/cassandra.mdx
@@ -46,6 +46,11 @@ has a number of parameters to further configure a connection.
   certificate and private key; a certificate, private key, and issuing CA
   certificate; or just a CA certificate.
 
+!> **Known Issue:** There is a known issue when using `pem_bundle` with only a CA (no client certificate & key)
+   where Vault will not parse the CA certificate correctly. To work around this, use `pem_json` with the
+   following structure: `{"ca_chain": ["-----BEGIN CERTIFICATE-----\nMIIEFjC...FNYakP7I\n-----END CERTIFICATE-----"]}`
+   Also make sure the PEM data is properly JSON encoded with `\n` instead of newlines.
+
 - `pem_json` `(string: "")` – Specifies JSON containing a certificate and
   private key; a certificate, private key, and issuing CA certificate; or just a
   CA certificate. For convenience format is the same as the output of the