diff --git a/lib/store/src/transaction.rs b/lib/store/src/transaction.rs
index 10bd664..03c2544 100644
--- a/lib/store/src/transaction.rs
+++ b/lib/store/src/transaction.rs
@@ -334,7 +334,7 @@ struct Keyspace<'db> {
 
 impl<'db> Keyspace<'db> {
     /// Retrieve a value from the database. Returns `Missing` if the key does not exist.
-    pub fn get(&self, key: impl AsRef<[u8]>) -> Result<impl AsRef<[u8]> + 'db> {
+    fn get(&self, key: impl AsRef<[u8]>) -> Result<impl AsRef<[u8]> + 'db> {
         self.tx
             .inner
             .get_pinned_cf(&self.cf, key)
@@ -342,25 +342,25 @@ impl<'db> Keyspace<'db> {
             .and_then(|opt| opt.ok_or(Error::Missing))
     }
     /// Set the value at `key` to `val`.
-    pub fn set(&self, key: impl AsRef<[u8]>, val: impl AsRef<[u8]>) -> Result<()> {
+    fn set(&self, key: impl AsRef<[u8]>, val: impl AsRef<[u8]>) -> Result<()> {
         self.tx
             .inner
             .put_cf(&self.cf, key, val)
             .map_err(Error::Internal)
     }
     /// Delete the key-value pair identified by `key`.
-    pub fn del(&self, key: impl AsRef<[u8]>) -> Result<()> {
+    fn del(&self, key: impl AsRef<[u8]>) -> Result<()> {
         self.tx.inner.delete_cf(&self.cf, &key)?;
         OK
     }
     /// Remove the key and associated value from the keyspace, and return its previous value.
-    pub fn pop(&self, key: impl AsRef<[u8]>) -> Result<Option<Vec<u8>>> {
+    fn pop(&self, key: impl AsRef<[u8]>) -> Result<Option<Vec<u8>>> {
         let old = self.tx.inner.get_for_update_cf(&self.cf, &key, true)?;
         self.del(key)?;
         Ok(old)
     }
     /// Check whether the key exists in the keyspace.
-    pub fn has(&self, key: impl AsRef<[u8]>) -> Result<bool> {
+    fn has(&self, key: impl AsRef<[u8]>) -> Result<bool> {
         self.tx
             .inner
             .get_pinned_cf(&self.cf, key)
@@ -368,7 +368,7 @@ impl<'db> Keyspace<'db> {
             .map(|opt| opt.is_some())
     }
     /// Execute a prefix scan.
-    pub fn scan(
+    fn scan(
         &self,
         prefix: impl AsRef<[u8]> + 'db,
     ) -> impl Iterator<Item = Result<(impl AsRef<[u8]> + 'static, impl AsRef<[u8]> + 'static)>> + 'db
@@ -386,7 +386,7 @@ impl<'db> Keyspace<'db> {
             .map(|r| r.map_err(Error::Internal))
     }
     /// Show all items in the entire keyspace.
-    pub fn list(
+    fn list(
         &self,
     ) -> impl Iterator<Item = Result<(impl AsRef<[u8]> + 'static, impl AsRef<[u8]> + 'static)>> + 'db
     {