diff --git a/examples/rp2040/minimal/Cargo.toml b/examples/rp2040/minimal/Cargo.toml
index 8724736..87dd3be 100644
--- a/examples/rp2040/minimal/Cargo.toml
+++ b/examples/rp2040/minimal/Cargo.toml
@@ -10,6 +10,7 @@ keywords = ["async", "embedded", "realtime", "os"]
 categories = ["embedded"]
 readme = "README.mkdn"
 publish = false
+rust-version = "1.69"
 
 [package.metadata.docs.rs]
 default-target = "thumbv6m-none-eabi"
diff --git a/examples/stm32f4/blinky/Cargo.toml b/examples/stm32f4/blinky/Cargo.toml
index a847d55..0908356 100644
--- a/examples/stm32f4/blinky/Cargo.toml
+++ b/examples/stm32f4/blinky/Cargo.toml
@@ -10,6 +10,7 @@ keywords = ["async", "embedded", "realtime", "os"]
 categories = ["embedded"]
 readme = "README.mkdn"
 publish = false
+rust-version = "1.69"
 
 [package.metadata.docs.rs]
 default-target = "thumbv7em-none-eabihf"
diff --git a/examples/stm32f4/minimal/Cargo.toml b/examples/stm32f4/minimal/Cargo.toml
index 2b904ca..86747a1 100644
--- a/examples/stm32f4/minimal/Cargo.toml
+++ b/examples/stm32f4/minimal/Cargo.toml
@@ -10,6 +10,7 @@ keywords = ["async", "embedded", "realtime", "os"]
 categories = ["embedded"]
 readme = "README.mkdn"
 publish = false
+rust-version = "1.69"
 
 [package.metadata.docs.rs]
 default-target = "thumbv7em-none-eabihf"
diff --git a/examples/stm32f4/uart-echo/Cargo.toml b/examples/stm32f4/uart-echo/Cargo.toml
index bc70e2d..55360a3 100644
--- a/examples/stm32f4/uart-echo/Cargo.toml
+++ b/examples/stm32f4/uart-echo/Cargo.toml
@@ -10,6 +10,7 @@ keywords = ["async", "embedded", "realtime", "os"]
 categories = ["embedded"]
 readme = "README.mkdn"
 publish = false
+rust-version = "1.69"
 
 [package.metadata.docs.rs]
 default-target = "thumbv7em-none-eabihf"
diff --git a/examples/stm32h7/minimal/Cargo.toml b/examples/stm32h7/minimal/Cargo.toml
index a8dfca0..4b6753a 100644
--- a/examples/stm32h7/minimal/Cargo.toml
+++ b/examples/stm32h7/minimal/Cargo.toml
@@ -10,6 +10,7 @@ keywords = ["async", "embedded", "realtime", "os"]
 categories = ["embedded"]
 readme = "README.mkdn"
 publish = false
+rust-version = "1.69"
 
 [package.metadata.docs.rs]
 default-target = "thumbv7em-none-eabihf"
diff --git a/examples/stm32h7/uart-echo/Cargo.toml b/examples/stm32h7/uart-echo/Cargo.toml
index 6285df3..656c672 100644
--- a/examples/stm32h7/uart-echo/Cargo.toml
+++ b/examples/stm32h7/uart-echo/Cargo.toml
@@ -10,6 +10,7 @@ keywords = ["async", "embedded", "realtime", "os"]
 categories = ["embedded"]
 readme = "README.mkdn"
 publish = false
+rust-version = "1.69"
 
 [package.metadata.docs.rs]
 default-target = "thumbv7em-none-eabihf"
diff --git a/testsuite/Cargo.toml b/testsuite/Cargo.toml
index e8e0c18..abeb607 100644
--- a/testsuite/Cargo.toml
+++ b/testsuite/Cargo.toml
@@ -10,6 +10,7 @@ keywords = ["async", "embedded", "realtime", "os"]
 categories = ["embedded"]
 readme = "README.mkdn"
 publish = false
+rust-version = "1.69"
 
 [package.metadata.docs.rs]
 default-target = "thumbv7em-none-eabihf"
diff --git a/testsuite/stm32f4/Cargo.toml b/testsuite/stm32f4/Cargo.toml
index d06eac5..2c5c2b3 100644
--- a/testsuite/stm32f4/Cargo.toml
+++ b/testsuite/stm32f4/Cargo.toml
@@ -10,6 +10,7 @@ keywords = ["async", "embedded", "realtime", "os"]
 categories = ["embedded"]
 readme = "README.mkdn"
 publish = false
+rust-version = "1.69"
 
 [package.metadata.docs.rs]
 default-target = "thumbv7em-none-eabihf"
diff --git a/testsuite/stm32g0/Cargo.toml b/testsuite/stm32g0/Cargo.toml
index ea00871..0535162 100644
--- a/testsuite/stm32g0/Cargo.toml
+++ b/testsuite/stm32g0/Cargo.toml
@@ -10,6 +10,7 @@ keywords = ["async", "embedded", "realtime", "os"]
 categories = ["embedded"]
 readme = "README.mkdn"
 publish = false
+rust-version = "1.69"
 
 [package.metadata.docs.rs]
 default-target = "thumbv7em-none-eabihf"