diff --git a/Foundation.SourceClients/Services/FoundationAccountClient.cs b/Foundation.SourceClients/Services/FoundationAccountClient.cs
index 7a0ca51..4ba5c22 100644
--- a/Foundation.SourceClients/Services/FoundationAccountClient.cs
+++ b/Foundation.SourceClients/Services/FoundationAccountClient.cs
@@ -143,7 +143,7 @@ public async Task<X509Certificate2> RenewCertificate(CancellationToken ct)
                 _client.BaseAddress + RENEW_PATH
             );
 
-            var response = await _client.PostAsJsonAsync(RENEW_PATH, ct);
+            var response = await _client.PostAsync(RENEW_PATH, null, cancellationToken: ct);
             response.EnsureSuccessStatusCode();
 
             var payload = await response.Content.ReadFromJsonAsync<CredentialPayload>(cancellationToken: ct);