diff --git a/crates/pgen/README.md b/crates/pgen/README.md
index ddf284b..5d9ad9c 100644
--- a/crates/pgen/README.md
+++ b/crates/pgen/README.md
@@ -76,7 +76,7 @@ pgen 3.0.0-alpha.1
 
 ## Usage
 
-```
+```text
 pgen [-d] [-w <USE_WLIST>] [-n <n>] [-k <k>] [-e]
 pgen -h | --help
 pgen -V | --version