diff --git a/rust-toolchain b/rust-toolchain
new file mode 100644
index 0000000..be838d8
--- /dev/null
+++ b/rust-toolchain
@@ -0,0 +1,3 @@
+[toolchain]
+channel = "1.72.0"
+components = ["rustfmt", "clippy"]
diff --git a/src/lib.rs b/src/lib.rs
index 39ebf7c..21536fa 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -237,7 +237,7 @@ const DEFAULT_THEME_LIGHT: &str = "base16-ocean.light";
 const DEFAULT_THEME_DARK: &str = "base16-ocean.dark";
 
 #[derive(Debug)]
-struct CommonMarkOptions {
+pub struct CommonMarkOptions {
     indentation_spaces: usize,
     max_image_width: Option<usize>,
     show_alt_text_on_hover: bool,