diff --git a/ci.sh b/ci.sh
index a03efb856..376cc8f44 100755
--- a/ci.sh
+++ b/ci.sh
@@ -5,10 +5,6 @@ set -euo pipefail
 export RUSTFLAGS=-Dwarnings
 export DEFMT_LOG=trace,embassy_net_esp_hosted=debug,cyw43=info,cyw43_pio=info,smoltcp=info
 
-# needed by wifi examples
-export WIFI_NETWORK=x
-export WIFI_PASSWORD=x
-
 TARGET=$(rustc -vV | sed -n 's|host: ||p')
 
 BUILD_EXTRA=""
diff --git a/cyw43/README.md b/cyw43/README.md
index e4a81410d..5b8f3cf40 100644
--- a/cyw43/README.md
+++ b/cyw43/README.md
@@ -30,7 +30,7 @@ TODO:
 ### Example 2: Create an access point (IP and credentials in the code)
 - `cargo run --release --bin wifi_ap_tcp_server`
 ### Example 3: Connect to an existing network and create a server
-- `WIFI_NETWORK=MyWifiNetwork WIFI_PASSWORD=MyWifiPassword cargo run --release --bin wifi_tcp_server`
+- `cargo run --release --bin wifi_tcp_server`
 
 After a few seconds, you should see that DHCP picks up an IP address like this
 ```
diff --git a/embassy-stm32-wpan/Cargo.toml b/embassy-stm32-wpan/Cargo.toml
index 4b830cab3..6d4027fcc 100644
--- a/embassy-stm32-wpan/Cargo.toml
+++ b/embassy-stm32-wpan/Cargo.toml
@@ -5,8 +5,8 @@ edition = "2021"
 license = "MIT OR Apache-2.0"
 
 [package.metadata.embassy_docs]
-src_base = "https://github.com/embassy-rs/embassy/blob/embassy-stm32-wpan-v$VERSION/embassy-stm32-wpan/src"
-src_base_git = "https://github.com/embassy-rs/embassy/blob/$COMMIT/embassy-stm32-wpan/src"
+src_base = "https://github.com/embassy-rs/embassy/blob/embassy-stm32-wpan-v$VERSION/embassy-stm32-wpan/src/"
+src_base_git = "https://github.com/embassy-rs/embassy/blob/$COMMIT/embassy-stm32-wpan/src/"
 target = "thumbv7em-none-eabihf"
 features = ["stm32wb55rg"]
 
diff --git a/examples/nrf52840/src/bin/wifi_esp_hosted.rs b/examples/nrf52840/src/bin/wifi_esp_hosted.rs
index f7496703c..112e41bcd 100644
--- a/examples/nrf52840/src/bin/wifi_esp_hosted.rs
+++ b/examples/nrf52840/src/bin/wifi_esp_hosted.rs
@@ -16,6 +16,9 @@ use embedded_io::asynch::Write;
 use static_cell::make_static;
 use {defmt_rtt as _, embassy_net_esp_hosted as hosted, panic_probe as _};
 
+const WIFI_NETWORK: &str = "EmbassyTest";
+const WIFI_PASSWORD: &str = "V8YxhKt5CdIAJFud";
+
 bind_interrupts!(struct Irqs {
     SPIM3 => spim::InterruptHandler<peripherals::SPI3>;
     RNG => embassy_nrf::rng::InterruptHandler<peripherals::RNG>;
@@ -70,7 +73,7 @@ async fn main(spawner: Spawner) {
     unwrap!(spawner.spawn(wifi_task(runner)));
 
     control.init().await;
-    control.join(env!("WIFI_NETWORK"), env!("WIFI_PASSWORD")).await;
+    control.join(WIFI_NETWORK, WIFI_PASSWORD).await;
 
     let config = embassy_net::Config::dhcpv4(Default::default());
     // let config = embassy_net::Config::ipv4_static(embassy_net::StaticConfigV4 {
diff --git a/examples/rp/src/bin/wifi_tcp_server.rs b/examples/rp/src/bin/wifi_tcp_server.rs
index e9d1079a6..197535f45 100644
--- a/examples/rp/src/bin/wifi_tcp_server.rs
+++ b/examples/rp/src/bin/wifi_tcp_server.rs
@@ -19,6 +19,9 @@ use embedded_io::asynch::Write;
 use static_cell::make_static;
 use {defmt_rtt as _, panic_probe as _};
 
+const WIFI_NETWORK: &str = "EmbassyTest";
+const WIFI_PASSWORD: &str = "V8YxhKt5CdIAJFud";
+
 #[embassy_executor::task]
 async fn wifi_task(
     runner: cyw43::Runner<'static, Output<'static, PIN_23>, PioSpi<'static, PIN_25, PIO0, 0, DMA_CH0>>,
@@ -82,8 +85,8 @@ async fn main(spawner: Spawner) {
     unwrap!(spawner.spawn(net_task(stack)));
 
     loop {
-        //control.join_open(env!("WIFI_NETWORK")).await;
-        match control.join_wpa2(env!("WIFI_NETWORK"), env!("WIFI_PASSWORD")).await {
+        //control.join_open(WIFI_NETWORK).await;
+        match control.join_wpa2(WIFI_NETWORK, WIFI_PASSWORD).await {
             Ok(_) => break,
             Err(err) => {
                 info!("join failed with status={}", err.status);
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index c201d8bdf..5db74c7a9 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,7 +1,7 @@
 # Before upgrading check that everything is available on all tier1 targets here:
 # https://rust-lang.github.io/rustup-components-history
 [toolchain]
-channel = "nightly-2023-07-03"
+channel = "nightly-2023-06-28"
 components = [ "rust-src", "rustfmt", "llvm-tools-preview" ]
 targets = [
     "thumbv7em-none-eabi",