diff --git a/doc/ale-supported-languages-and-tools.txt b/doc/ale-supported-languages-and-tools.txt
index 45252294..7babf590 100644
--- a/doc/ale-supported-languages-and-tools.txt
+++ b/doc/ale-supported-languages-and-tools.txt
@@ -44,6 +44,7 @@ Notes:
   * `shellcheck`
   * `shfmt`
 * C
+  * `astyle`
   * `ccls`
   * `clang`
   * `clangd`