diff --git a/src/components/ExternalLink/ExternalLink.test.js b/src/components/ExternalLink/ExternalLink.test.tsx
similarity index 100%
rename from src/components/ExternalLink/ExternalLink.test.js
rename to src/components/ExternalLink/ExternalLink.test.tsx
diff --git a/src/components/ExternalLink/__snapshots__/ExternalLink.test.js.snap b/src/components/ExternalLink/__snapshots__/ExternalLink.test.tsx.snap
similarity index 100%
rename from src/components/ExternalLink/__snapshots__/ExternalLink.test.js.snap
rename to src/components/ExternalLink/__snapshots__/ExternalLink.test.tsx.snap
diff --git a/src/components/ExternalLink/index.js b/src/components/ExternalLink/index.js
deleted file mode 100644
index ff2672a..0000000
--- a/src/components/ExternalLink/index.js
+++ /dev/null
@@ -1,11 +0,0 @@
-export default function ExternalLink({ href, title }) {
-  return (
-    <a
-      href={href}
-      target="_blank"
-      rel="noopener noreferrer"
-    >
-      {title}
-    </a>
-  )
-}
diff --git a/src/components/ExternalLink/index.tsx b/src/components/ExternalLink/index.tsx
new file mode 100644
index 0000000..60e6852
--- /dev/null
+++ b/src/components/ExternalLink/index.tsx
@@ -0,0 +1,16 @@
+interface ExternalLinkProps{
+  href: string,
+  title: string,
+}
+
+export default function ExternalLink({ href, title }: ExternalLinkProps) {
+  return (
+    <a
+      href={href}
+      target="_blank"
+      rel="noopener noreferrer"
+    >
+      {title}
+    </a>
+  )
+}