diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0cc80a6..cd53e8a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 - Added support for more languages:
+  - Astro
   - Svelte
 
 ## [0.4.2] - 2025-02-22
diff --git a/src/languages.rs b/src/languages.rs
index d349146..57ef54e 100644
--- a/src/languages.rs
+++ b/src/languages.rs
@@ -3,6 +3,7 @@ pub fn language_for_extension(extension: &str) -> Option<&'static str> {
     match extension {
         "asciidoc" | "adoc" => Some("AsciiDoc"),
         "asm" => Some("Assembly"),
+        "astro" => Some("Astro"),
         "c" | "h" => Some("C"),
         "clj" => Some("Clojure"),
         "coq" => Some("Coq"),