diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8e6feef..f530220 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## Unreleased
+
+### Maintenance
+
+- `pioneer-optical` 0.10 (the 0.7 line is yanked). The vendor CDB bytes are unchanged, and a test pins them.
+
 ## [1.8.0] — 2026-10-05
 
 ### Changed
diff --git a/Cargo.lock b/Cargo.lock
index 1641084..0fb2acd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -104,7 +104,7 @@ dependencies = [
 
 [[package]]
 name = "freemkv-unlock"
-version = "1.7.7"
+version = "1.8.0"
 dependencies = [
  "aes",
  "base64",
@@ -210,9 +210,9 @@ checksum = "a89322df9ebe1c1578d689c92318e070967d1042b512afbe49518723f4e6d5cd"
 
 [[package]]
 name = "pioneer-optical"
-version = "0.7.2"
+version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "48a5bdb9e9a07422ceb5133d227fbe4ecce77060007e5a9bac0dda3d82d72911"
+checksum = "bf5074a27cc39fb664d0b994814ffe8530e3e8590aff0d104723332dbcb1abc4"
 
 [[package]]
 name = "proc-macro2"
@@ -411,18 +411,6 @@ version = "1.0.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "29666d0abbfad1e3dc4dcf6144730dd3a3ab225bbbdac83319345b1b44ccfc1b"
 
-[[patch.unused]]
-name = "freemkv-engine"
-version = "1.7.7"
-
-[[patch.unused]]
-name = "freemkv-i18n"
-version = "1.7.7"
-
-[[patch.unused]]
-name = "freemkv-keysources"
-version = "1.7.7"
-
 [[patch.unused]]
 name = "libfreemkv"
 version = "1.7.7"
diff --git a/Cargo.toml b/Cargo.toml
index abf3f92..2066610 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -31,7 +31,7 @@ rand = "0.10"
 # the redacting Debug impls). `derive` gives ZeroizeOnDrop for the key structs.
 zeroize = { version = "1", features = ["derive"] }
 # Pioneer/Renesas vendor CDB constructors (identity read, gated memory read, knock).
-pioneer-optical = "0.7"
+pioneer-optical = "0.10"
 
 [lints.clippy]
 uninlined_format_args = "allow"
diff --git a/src/renesas/mod.rs b/src/renesas/mod.rs
index 3dc9955..00acbe3 100644
--- a/src/renesas/mod.rs
+++ b/src/renesas/mod.rs
@@ -10,7 +10,7 @@ use crate::scsi::{DataDirection, ScsiTransport, is_dead_bus};
 use crate::{UnlockCtx, UnlockError, Unlocked, Unlocker};
 
 /// The Renesas vendor identity block length (READ_BUFFER 0x02/0xF1).
-const RB_F1_LEN: usize = pioneer_optical::IDENTITY_LEN as usize;
+const RB_F1_LEN: usize = pioneer_optical::IDENTITY_LEN;
 /// The ASCII interface marker a Renesas controller returns at `[16..19]`.
 const RENESAS_MARKER: &[u8] = b"SAT";
 const RENESAS_MARKER_OFFSET: usize = 16;
@@ -26,7 +26,7 @@ const RENESAS_MARKER_OFFSET: usize = 16;
 /// `Err(Transport)` on a dead bus.
 pub fn is_renesas(scsi: &mut dyn ScsiTransport) -> std::result::Result<bool, UnlockError> {
     let mut buf = [0u8; RB_F1_LEN];
-    let cdb = pioneer_optical::vendor_identity();
+    let cdb = pioneer_optical::cdb::vendor_identity();
     match scsi.execute(&cdb, DataDirection::FromDevice, &mut buf, 5_000) {
         Ok(r) => {
             let end = RENESAS_MARKER_OFFSET + RENESAS_MARKER.len();
@@ -73,13 +73,16 @@ impl Renesas {
     // knock + second read (B).
     fn vendor_open(scsi: &mut dyn ScsiTransport) -> std::result::Result<bool, UnlockError> {
         // A: primary open read.
-        if read_is_good(scsi, &pioneer_optical::read_memory(0x04, OPEN_READ_LEN))? {
+        if read_is_good(
+            scsi,
+            &pioneer_optical::cdb::read_memory(0x04, OPEN_READ_LEN),
+        )? {
             return Ok(true);
         }
         // B: MakeMKV's fallback — knock, then the second-window read. The knock is
         // fire-and-forget (payload-less); its own status is not the signal.
         match scsi.execute(
-            &pioneer_optical::knock(),
+            &pioneer_optical::cdb::knock(),
             DataDirection::None,
             &mut [],
             5_000,
@@ -90,7 +93,7 @@ impl Renesas {
         }
         read_is_good(
             scsi,
-            &pioneer_optical::read_memory(0x50_0000, OPEN_READ_LEN),
+            &pioneer_optical::cdb::read_memory(0x50_0000, OPEN_READ_LEN),
         )
     }
 }
@@ -164,6 +167,23 @@ mod tests {
     use crate::DiscKind;
     use crate::scsi::{DataDirection, Result, ScsiError, ScsiResult, ScsiTransport};
 
+    #[test]
+    fn vendor_cdbs_are_the_wire_bytes() {
+        assert_eq!(
+            pioneer_optical::cdb::vendor_identity(),
+            [0x3C, 0x02, 0xF1, 0, 0, 0, 0, 0, 0x30, 0]
+        );
+        assert_eq!(
+            pioneer_optical::cdb::read_memory(0x50_0000, 0x10),
+            [0x3C, 0x02, 0xB0, 0x50, 0, 0, 0, 0, 0x10, 0]
+        );
+        assert_eq!(
+            pioneer_optical::cdb::knock(),
+            [0x3B, 0x02, 0x41, 0xA5, 0xAA, 0xAA, 0, 0, 0, 0]
+        );
+        assert_eq!(RB_F1_LEN, 48);
+    }
+
     /// Serves a fixed READ_BUFFER payload (Renesas-like) with a Good status.
     struct RenesasTransport {
         payload: Vec<u8>,