diff --git a/deuterium-bms/README.md b/deuterium-bms/README.md
index 54bbef2..dc1211a 100644
--- a/deuterium-bms/README.md
+++ b/deuterium-bms/README.md
@@ -4,7 +4,7 @@ Cell group balancing and monitoring interface based on the Qorvo PAC25140.
 
 ## Setup
 
-```shell
+```sh
 rustup target add thumbv7em-none-eabihf
 cargo install flip-link probe-rs
 ```
diff --git a/deuterium-controller/README.md b/deuterium-controller/README.md
index 80adff7..9587f48 100644
--- a/deuterium-controller/README.md
+++ b/deuterium-controller/README.md
@@ -2,7 +2,7 @@
 
 ## Setup
 
-```shell
+```sh
 rustup target add thumbv7em-none-eabihf
 cargo install flip-link probe-rs
 ```