diff --git a/installation/authentication-configuration.md b/installation/authentication-configuration.md
index fd31cbb..2bb9058 100644
--- a/installation/authentication-configuration.md
+++ b/installation/authentication-configuration.md
@@ -32,6 +32,10 @@ LEAN_OIDC_CLIENT_SECRET=your-client-secret
 https://your-leantime-domain.com/oidc/callback
 ```
 
+**Key algorithms:** Configure your identity provider to use **RSA** keys for Leantime.
+
+**PKCE** is not currently supported by Leantime, disable this for Leantime in your identity provider.
+
 ### Provider-Specific Configuration
 
 #### Keycloak