diff --git a/synedrion/src/uint/bounded.rs b/synedrion/src/uint/bounded.rs
index a31bbfd..ad0632c 100644
--- a/synedrion/src/uint/bounded.rs
+++ b/synedrion/src/uint/bounded.rs
@@ -64,7 +64,7 @@ where
     into = "PackedBounded",
     bound = "T: Integer + Encoding + crypto_bigint::Bounded"
 )]
-pub struct Bounded<T> {
+pub(crate) struct Bounded<T> {
     /// bound on the bit size of the value
     bound: u32,
     value: T,
diff --git a/synedrion/src/uint/signed.rs b/synedrion/src/uint/signed.rs
index fcd5b26..6831d5f 100644
--- a/synedrion/src/uint/signed.rs
+++ b/synedrion/src/uint/signed.rs
@@ -59,7 +59,7 @@ where
     into = "PackedSigned",
     bound = "T: Integer + Encoding + crypto_bigint::Bounded + ConditionallySelectable"
 )]
-pub struct Signed<T> {
+pub(crate) struct Signed<T> {
     /// bound on the bit size of the absolute value
     bound: u32,
     value: T,