diff --git a/backhand-cli/src/bin/add.rs b/backhand-cli/src/bin/add.rs
index 57a5e020..016c67ad 100644
--- a/backhand-cli/src/bin/add.rs
+++ b/backhand-cli/src/bin/add.rs
@@ -58,6 +58,10 @@ struct Args {
     /// Override mtime read from <FILE>
     #[clap(long, required_if_eq("dir", "true"))]
     mtime: Option<u32>,
+
+    /// Custom KiB padding length
+    #[clap(long)]
+    pad_len: Option<u32>,
 }
 
 fn main() -> ExitCode {
@@ -103,6 +107,10 @@ fn main() -> ExitCode {
         }
     }
 
+    if let Some(pad_len) = args.pad_len {
+        filesystem.set_kib_padding(pad_len)
+    }
+
     // write new file
     let output = File::create(&args.out).unwrap();
     if let Err(e) = filesystem.write(output) {
diff --git a/backhand-cli/src/bin/replace.rs b/backhand-cli/src/bin/replace.rs
index dbbce0af..c3e1e16f 100644
--- a/backhand-cli/src/bin/replace.rs
+++ b/backhand-cli/src/bin/replace.rs
@@ -35,6 +35,10 @@ struct Args {
     /// Squashfs output image
     #[clap(short, long, default_value = "replaced.squashfs")]
     out: PathBuf,
+
+    /// Custom KiB padding length
+    #[clap(long)]
+    pad_len: Option<u32>,
 }
 
 fn main() -> ExitCode {
@@ -54,6 +58,10 @@ fn main() -> ExitCode {
         return ExitCode::FAILURE;
     }
 
+    if let Some(pad_len) = args.pad_len {
+        filesystem.set_kib_padding(pad_len)
+    }
+
     // write new file
     let output = File::create(&args.out).unwrap();
     filesystem.write(output).unwrap();