diff --git a/rustls-platform-verifier/src/tests/verification_mock/mod.rs b/rustls-platform-verifier/src/tests/verification_mock/mod.rs
index 25d5039..59e322a 100644
--- a/rustls-platform-verifier/src/tests/verification_mock/mod.rs
+++ b/rustls-platform-verifier/src/tests/verification_mock/mod.rs
@@ -111,8 +111,12 @@ pub(super) fn verification_without_mock_root() {
     // runner fails to find any roots with openssl-probe we need to provide webpki-root-certs here
     // or the test will fail with the `OtherError` instead of the expected `CertificateError`.
     #[cfg(target_os = "freebsd")]
-    let verifier =
-        Verifier::new_with_extra_roots(webpki_root_certs::TLS_SERVER_ROOT_CERTS.iter().cloned());
+    let verifier = Verifier::new_with_extra_roots(
+        webpki_root_certs::TLS_SERVER_ROOT_CERTS
+            .iter()
+            .cloned()
+            .collect(),
+    );
 
     #[cfg(not(target_os = "freebsd"))]
     let verifier = Verifier::new();
diff --git a/rustls-platform-verifier/src/tests/verification_real_world/mod.rs b/rustls-platform-verifier/src/tests/verification_real_world/mod.rs
index ceab620..532be9e 100644
--- a/rustls-platform-verifier/src/tests/verification_real_world/mod.rs
+++ b/rustls-platform-verifier/src/tests/verification_real_world/mod.rs
@@ -128,8 +128,12 @@ fn real_world_test<E: std::error::Error>(test_case: &TestCase<E>) {
     // On BSD systems openssl-probe fails to find the system CA bundle,
     // so we must provide extra roots from webpki-root-cert.
     #[cfg(target_os = "freebsd")]
-    let verifier =
-        Verifier::new_with_extra_roots(webpki_root_certs::TLS_SERVER_ROOT_CERTS.iter().cloned());
+    let verifier = Verifier::new_with_extra_roots(
+        webpki_root_certs::TLS_SERVER_ROOT_CERTS
+            .iter()
+            .cloned()
+            .collect(),
+    );
 
     #[cfg(not(target_os = "freebsd"))]
     let verifier = Verifier::new();