diff --git a/example-book/src/chapter_2.md b/example-book/src/chapter_2.md
index 5d046a3..4aa4d1c 100644
--- a/example-book/src/chapter_2.md
+++ b/example-book/src/chapter_2.md
@@ -26,4 +26,12 @@ It uses external Typst that should be installed in path, so you can use packages
         domain: (-calc.pi, calc.pi), x => calc.cos((x + calc.pi) * 1rad))
     })
 })
+```
+
+```typ
+$integral_a^b x^2$
+
+#show math.equation: set text(font: "Fira Math", fallback: false)
+
+$integral_a^b x^2$
 ```
\ No newline at end of file
diff --git a/example-book/src/fonts/FiraMath-Regular.otf b/example-book/src/fonts/FiraMath-Regular.otf
new file mode 100644
index 0000000..f1f9d40
Binary files /dev/null and b/example-book/src/fonts/FiraMath-Regular.otf differ
diff --git a/src/lib.rs b/src/lib.rs
index f44b4bb..a0e6ec6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -162,6 +162,7 @@ fn process_chapter(
                                 let (file, err) = render_block(
                                     text,
                                     chapter_path.clone(),
+                                    build_dir.clone(),
                                     chapter.name.clone(),
                                     !lang.contains("nopreamble"),
                                 );
@@ -297,6 +298,7 @@ fn sha256_hash(input: &str) -> String {
 fn render_block(
     src: String,
     mut dir: PathBuf,
+    mut build_dir: PathBuf,
     name: String,
     preamble: bool,
 ) -> (String, Option<impl Future<Output = ()>>) {
@@ -319,13 +321,21 @@ fn render_block(
         };
         write!(file, "{}", src).expect("Error writing to file");
 
-        let res = Command::new("typst")
+        let mut res = Command::new("typst");
+        let mut res = res
             .arg("c")
             .arg(&dir)
             .arg("--root")
             .arg(dir.parent().unwrap().parent().unwrap())
-            .arg(&output)
-            .output();
+            .arg(&output);
+
+        build_dir.push("fonts");
+    
+        if build_dir.exists() {
+            res = res.arg("--font-path").arg(build_dir)
+        }
+        
+        let res = res.output();
 
         command = Some(async move {
             let output = res.await.expect("Failed").stderr;