diff --git a/guest/rialto/tests/test.rs b/guest/rialto/tests/test.rs
index 7c0d9dc..42a4284 100644
--- a/guest/rialto/tests/test.rs
+++ b/guest/rialto/tests/test.rs
@@ -288,7 +288,9 @@
 }
 
 fn check_csr(csr: Vec<u8>) -> Result<()> {
-    let _csr = rkp::Csr::from_cbor(&Session::default(), &csr[..]).context("Failed to parse CSR")?;
+    let mut session = Session::default();
+    session.set_allow_any_mode(true);
+    let _csr = rkp::Csr::from_cbor(&session, &csr[..]).context("Failed to parse CSR")?;
     Ok(())
 }