diff --git a/src/lib.rs b/src/lib.rs
index ae27be8..7ee49a5 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -32,13 +32,6 @@ use rayon::iter::ParallelIterator;
 #[cfg(feature = "bulk_verify")]
 use std::sync::mpsc::channel;
 
-#[cfg(feature = "encrypt_to_tag")]
-use secretbox::CipherType::Salsa20;
-#[cfg(feature = "encrypt_to_tag")]
-use secretbox::SecretBox;
-#[cfg(feature = "encrypt_to_tag")]
-use std::string::FromUtf8Error;
-
 /// A tag is a probabilistic cryptographic structure. When constructed for a given `TaggingKey`
 /// it will pass the `DetectionKey::test_tag` 100% of the time. For other tagging keys
 /// it will pass the test with probability `GAMMA` related to the security parameter of the system.