diff --git a/ai_env.example b/ai_env.example
index ab1977d..df1c752 100644
--- a/ai_env.example
+++ b/ai_env.example
@@ -26,6 +26,13 @@ VITE_OBP_OAUTH2_TOKEN_REFRESH_THRESHOLD=300
 
 ### Session Configuration (Optional) ###
 # VITE_SESSION_MAX_AGE=3600                                                      # Session timeout in seconds (default: 3600 = 1 hour)
+                                                                                 # Common values:
+                                                                                 #   1800  = 30 minutes
+                                                                                 #   3600  = 1 hour (default)
+                                                                                 #   7200  = 2 hours
+                                                                                 #   14400 = 4 hours
+                                                                                 #   28800 = 8 hours (full work day)
+                                                                                 #   86400 = 24 hours
 
 ### Styling Configuration (Optional) ###
 # VITE_OBP_LOGO_URL=https://example.com/logo.png                                # Custom logo image URL (uses default OBP logo if not set)
diff --git a/server/controllers/UserController.ts b/server/controllers/UserController.ts
index e61c59e..4aea5f0 100644
--- a/server/controllers/UserController.ts
+++ b/server/controllers/UserController.ts
@@ -118,6 +118,13 @@ export class UserController {
             session['oauth2_token_timestamp'] = Date.now()
             session['oauth2_expires_in'] = newTokens.expiresIn
 
+            // CRITICAL: Update clientConfig with new access token
+            // This ensures subsequent API calls use the refreshed token
+            if (session['clientConfig'] && session['clientConfig'].oauth2) {
+              session['clientConfig'].oauth2.accessToken = newTokens.accessToken
+              console.log('UserController: Updated clientConfig with new access token')
+            }
+
             console.log('UserController: Token refresh successful')
           } catch (error) {
             console.error('UserController: Token refresh failed:', error)