diff --git a/src/alg_tests.rs b/src/alg_tests.rs
index 0831fcfe..6a81b638 100644
--- a/src/alg_tests.rs
+++ b/src/alg_tests.rs
@@ -14,6 +14,7 @@
 
 #![allow(clippy::duplicate_mod)]
 
+use std::panic;
 use std::prelude::v1::*;
 
 use base64::{Engine as _, engine::general_purpose};
diff --git a/src/cert.rs b/src/cert.rs
index cbf0e63f..c8028018 100644
--- a/src/cert.rs
+++ b/src/cert.rs
@@ -424,6 +424,7 @@ mod tests {
     use super::*;
     #[cfg(feature = "alloc")]
     use crate::crl::RevocationReason;
+    use std::panic;
     use std::prelude::v1::*;
 
     #[test]
diff --git a/src/crl/types.rs b/src/crl/types.rs
index 45890ab1..cb214254 100644
--- a/src/crl/types.rs
+++ b/src/crl/types.rs
@@ -944,7 +944,7 @@ mod tests {
 
     use pki_types::CertificateDer;
     use std::prelude::v1::*;
-    use std::println;
+    use std::{panic, println};
 
     use super::*;
     use crate::cert::Cert;