diff --git a/docs/source/basic_tutorials/launcher.md b/docs/source/basic_tutorials/launcher.md
index bdb8cb731be..08a6ed86cc3 100644
--- a/docs/source/basic_tutorials/launcher.md
+++ b/docs/source/basic_tutorials/launcher.md
@@ -2,7 +2,7 @@
 
 <!-- WRAP CODE BLOCKS -->
 
-```
+```shell
 Text Generation Launcher
 
 Usage: text-generation-launcher [OPTIONS]
diff --git a/update_doc.py b/update_doc.py
index 81e6a94ef5e..1fa398b0e7f 100644
--- a/update_doc.py
+++ b/update_doc.py
@@ -12,7 +12,7 @@ def main():
         "utf-8"
     )
     wrap_code_blocks_flag = "<!-- WRAP CODE BLOCKS -->"
-    final_doc = f"# Text-generation-launcher arguments\n\n{wrap_code_blocks_flag}\n\n```\n{output}\n```"
+    final_doc = f"# Text-generation-launcher arguments\n\n{wrap_code_blocks_flag}\n\n```shell\n{output}\n```"
 
     filename = "docs/source/basic_tutorials/launcher.md"
     if args.check: