diff --git a/src/components/Header.astro b/src/components/Header.astro
index bebceb5..7d7bc7d 100644
--- a/src/components/Header.astro
+++ b/src/components/Header.astro
@@ -1,7 +1,12 @@
 ---
 const { pathname } = Astro.url;
 
-const navLinks = [
+type NavLink = {
+	label: string;
+	path: string;
+};
+
+const navLinks: NavLink[] = [
 	{ label: '📝 Blog', path: '/' },
 	{ label: '👤 About', path: '/about/' },
 ];
diff --git a/src/components/PostPreview.astro b/src/components/PostPreview.astro
index e3c2e3e..6b22451 100644
--- a/src/components/PostPreview.astro
+++ b/src/components/PostPreview.astro
@@ -2,8 +2,17 @@
 import BlogHeader from '@components/BlogHeader.astro';
 import Tags from '@components/Tags.astro';
 
+interface Post {
+	data: {
+		title: string;
+		pubDate: Date;
+		tags: string[];
+	};
+	slug: string;
+}
+
 interface Props {
-	post: Object;
+	post: Post;
 }
 
 const { post } = Astro.props;
diff --git a/src/components/Tags.astro b/src/components/Tags.astro
index 1882f70..32f90d8 100644
--- a/src/components/Tags.astro
+++ b/src/components/Tags.astro
@@ -1,4 +1,8 @@
 ---
+interface Props {
+	tags: string[];
+}
+
 const { tags } = Astro.props;
 ---