diff --git a/src/helpers/async_file_writer.rs b/src/helpers/async_file_writer.rs
index eacb20bf..ab90f8a3 100644
--- a/src/helpers/async_file_writer.rs
+++ b/src/helpers/async_file_writer.rs
@@ -10,7 +10,7 @@ use tokio::{sync::mpsc, task::spawn_blocking};
 use super::{extracter::*, readable_rx::*, AutoAbortJoinHandle};
 use crate::{BinstallError, PkgFmt};
 
-pub enum Content {
+pub(crate) enum Content {
     /// Data to write to file
     Data(Bytes),
 
diff --git a/src/helpers/extracter.rs b/src/helpers/extracter.rs
index 77ad3665..c851b0c8 100644
--- a/src/helpers/extracter.rs
+++ b/src/helpers/extracter.rs
@@ -14,7 +14,7 @@ use crate::{BinstallError, PkgFmt};
 /// Extract files from the specified source onto the specified path.
 ///
 ///  * `fmt` - must not be `PkgFmt::Bin` or `PkgFmt::Zip`.
-pub fn extract_compressed_from_readable(
+pub(crate) fn extract_compressed_from_readable(
     dat: impl Read,
     fmt: PkgFmt,
     path: &Path,
@@ -66,7 +66,7 @@ pub fn extract_compressed_from_readable(
     Ok(())
 }
 
-pub fn unzip(dat: File, dst: &Path) -> Result<(), BinstallError> {
+pub(crate) fn unzip(dat: File, dst: &Path) -> Result<(), BinstallError> {
     debug!("Decompressing from zip archive to `{dst:?}`");
 
     let mut zip = ZipArchive::new(dat)?;
diff --git a/src/helpers/readable_rx.rs b/src/helpers/readable_rx.rs
index 02ccc344..8b387ab6 100644
--- a/src/helpers/readable_rx.rs
+++ b/src/helpers/readable_rx.rs
@@ -7,13 +7,13 @@ use tokio::sync::mpsc::Receiver;
 use super::async_file_writer::Content;
 
 #[derive(Debug)]
-pub struct ReadableRx<'a> {
+pub(crate) struct ReadableRx<'a> {
     rx: &'a mut Receiver<Content>,
     bytes: Bytes,
 }
 
 impl<'a> ReadableRx<'a> {
-    pub fn new(rx: &'a mut Receiver<Content>) -> Self {
+    pub(crate) fn new(rx: &'a mut Receiver<Content>) -> Self {
         Self {
             rx,
             bytes: Bytes::new(),