diff --git a/tests/stream_tests.rs b/tests/stream_tests.rs
index 9fed5a9..9d7426c 100644
--- a/tests/stream_tests.rs
+++ b/tests/stream_tests.rs
@@ -81,7 +81,7 @@ async fn encrypt_stream_with_padding() -> Result<(), futures::io::Error> {
     let mut encrypted = Vec::new();
     encrypted_stream.read_to_end(&mut encrypted).await.unwrap();
 
-    assert_eq!(encrypted.len(), 3146248);
+    assert_eq!(encrypted.len(), 3 * 1024 * 1024 + 389);
 
     let mut decrypted_stream = tanker.decrypt_stream(encrypted.as_slice()).await?;
     let mut decrypted = Vec::new();
diff --git a/tests/tanker_tests.rs b/tests/tanker_tests.rs
index 322a1ed..ad96f57 100644
--- a/tests/tanker_tests.rs
+++ b/tests/tanker_tests.rs
@@ -73,7 +73,8 @@ async fn encrypt_and_decrypt() -> Result<(), Error> {
     Ok(())
 }
 
-const SIMPLE_ENCRYPTION_OVERHEAD: usize = 17;
+// Encryption format v10 overhead
+const SIMPLE_ENCRYPTION_OVERHEAD: usize = 49;
 const SIMPLE_PADDED_ENCRYPTION_OVERHEAD: usize = SIMPLE_ENCRYPTION_OVERHEAD + 1;
 
 #[tokio::test(flavor = "multi_thread")]