diff --git a/snowflake-api/src/session.rs b/snowflake-api/src/session.rs
index a37a889..83ddab9 100644
--- a/snowflake-api/src/session.rs
+++ b/snowflake-api/src/session.rs
@@ -278,7 +278,10 @@ impl Session {
 
     #[cfg(feature = "cert-auth")]
     fn cert_request_body(&self) -> Result<CertLoginRequest, AuthError> {
-        let full_identifier = format!("{}.{}", &self.account_identifier, &self.username);
+        // we want to strip region information from the account identifier
+        // See: https://docs.snowflake.com/en/developer-guide/snowflake-rest-api/authentication#label-sfrest-api-jwt-token
+        let account = self.account_identifier.split_once(".").unwrap().0;
+        let full_identifier = format!("{}.{}", &account, &self.username);
         let private_key_pem = self
             .private_key_pem
             .as_ref()