diff --git a/esp-hal/CHANGELOG.md b/esp-hal/CHANGELOG.md
index 89f7d23ec..da105a6e2 100644
--- a/esp-hal/CHANGELOG.md
+++ b/esp-hal/CHANGELOG.md
@@ -100,6 +100,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - SPI: Fix naming violations for `Mode` enum variants (#2902)
 - SPI: Fix naming violations for `Address` and `Command` enum variants (#2906)
 
+- `ClockSource` enums are now `#[non_exhaustive]` (#2912)
+
 ### Fixed
 
 - Xtensa devices now correctly enable the `esp-hal-procmacros/rtc-slow` feature (#2594)
diff --git a/esp-hal/src/tsens.rs b/esp-hal/src/tsens.rs
index 6fe5cfc46..41f7f3cb1 100644
--- a/esp-hal/src/tsens.rs
+++ b/esp-hal/src/tsens.rs
@@ -54,6 +54,7 @@ use crate::{
 /// Clock source for the temperature sensor
 #[derive(Debug, Clone, Default, PartialEq, Eq, Copy, Hash)]
 #[cfg_attr(feature = "defmt", derive(defmt::Format))]
+#[non_exhaustive]
 pub enum ClockSource {
     /// Use RC_FAST clock source
     RcFast,
diff --git a/esp-hal/src/uart.rs b/esp-hal/src/uart.rs
index e696fb1ef..287afd98d 100644
--- a/esp-hal/src/uart.rs
+++ b/esp-hal/src/uart.rs
@@ -313,6 +313,7 @@ impl embedded_io::Error for Error {
 /// UART clock source
 #[derive(Debug, Default, Clone, Copy, PartialEq, Eq)]
 #[cfg_attr(feature = "defmt", derive(defmt::Format))]
+#[non_exhaustive]
 pub enum ClockSource {
     /// APB_CLK clock source
     #[cfg_attr(not(any(esp32c6, esp32h2, lp_uart)), default)]