diff --git a/src/lib.rs b/src/lib.rs
index b3fce84..7a03060 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -292,6 +292,7 @@ use header::{CocoonConfig, CocoonHeader};
 
 // Enumeration is needed to avoid dynamic allocation (important for "nostd" build).
 #[allow(clippy::large_enum_variant)]
+#[derive(Clone)]
 enum RngVariant {
     #[cfg(feature = "std")]
     Thread(ThreadRng),
@@ -422,6 +423,7 @@ pub use mini::*;
 /// [^1]: [`from_entropy`](Cocoon::from_entropy) is enabled when `getrandom` feature is enabled.
 ///
 /// [^2]: [`parse_only`](Cocoon::parse_only) makes decryption API accessible only.
+#[derive(Clone)]
 pub struct Cocoon<'a, M> {
     password: &'a [u8],
     rng: RngVariant,
diff --git a/src/mini.rs b/src/mini.rs
index 23cdd4c..6635512 100644
--- a/src/mini.rs
+++ b/src/mini.rs
@@ -21,6 +21,7 @@ use super::{
 pub const MINI_PREFIX_SIZE: usize = MiniFormatPrefix::SERIALIZE_SIZE;
 
 /// This is a mini cocoon for a convenient and cool encryption.
+#[derive(Clone)]
 pub struct MiniCocoon {
     key: Zeroizing<[u8; KEY_SIZE]>,
     rng: StdRng,