diff --git a/embassy-nrf/CHANGELOG.md b/embassy-nrf/CHANGELOG.md
index 72ecb116a1..70bbb33ea0 100644
--- a/embassy-nrf/CHANGELOG.md
+++ b/embassy-nrf/CHANGELOG.md
@@ -23,6 +23,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - bugfix: Do not write to UICR from non-secure code on nrf53
 - bugfix: Add delay to uart init anomaly fix
 - changed: `BufferedUarte::read_ready` now uses the same definition for 'empty' so following read calls will not block when true is returned
+- changed: allow configuring I2S in master mode without master clock output pin
 
 ## 0.8.0 - 2025-09-30
 
diff --git a/embassy-nrf/src/i2s.rs b/embassy-nrf/src/i2s.rs
index 9cce9f1e86..f33f4b9c33 100644
--- a/embassy-nrf/src/i2s.rs
+++ b/embassy-nrf/src/i2s.rs
@@ -422,7 +422,7 @@ impl<'d> I2S<'d> {
     pub fn new_master<T: Instance>(
         _i2s: Peri<'d, T>,
         _irq: impl interrupt::typelevel::Binding<T::Interrupt, InterruptHandler<T>> + 'd,
-        mck: Peri<'d, impl GpioPin>,
+        mck: Option<Peri<'d, impl GpioPin>>,
         sck: Peri<'d, impl GpioPin>,
         lrck: Peri<'d, impl GpioPin>,
         master_clock: MasterClock,
@@ -434,7 +434,7 @@ impl<'d> I2S<'d> {
         Self {
             r: T::regs(),
             state: T::state(),
-            mck: Some(mck.into()),
+            mck: mck.map(|mck| mck.into()),
             sck: sck.into(),
             lrck: lrck.into(),
             sdin: None,