diff --git a/.env b/.env
index 672e9be..fc1cd11 100644
--- a/.env
+++ b/.env
@@ -1,5 +1,5 @@
 export ZEPHYR_SDK_VERSION="0.16.1"
-export ZEPHYR_VERSION="105ef05c52d62fbb192eecb78475567d8475db0f"
+export ZEPHYR_VERSION="397b8465dc6bd771685d31321c104ad7d3a315f9"
 export MICROPYTHON_VERSION="fe2a8332ff9c7cc7b66ed6da04f5a4a825309818"
 export ZEPHYR_RUST_VERSION="d59c0a023794288dbda35c72d61b077f4e5b0e55"
 export KENNING_ZEPHYR_RUNTIME_VERSION="194feb761abb3d82b9e3af071bafe9001dc12804"