diff --git a/src/contents/parts.tsx b/src/contents/parts.tsx
index 3968c95c618372b55a95243e084221d65845bc66..2ea8bc2ef716237b981d9ad69b70d62dda2fc298 100644
--- a/src/contents/parts.tsx
+++ b/src/contents/parts.tsx
@@ -145,7 +145,7 @@ export function parts() {
                 <Element name="section3" className="element rounded-border" id='section3'>
                 <h2> 3.Contribution</h2>
                 <p className="indent">In addition, we have added content to the uploaded parts.</p>
-                <p className="indent">We optimized the codon of <a href=''>BBa_K3924011</a> and <a href=''>BBa_K3924002</a>, and added two basic components accordingly, namely <a href=''>BBa_K5378011</a> and <a href=''>BBa_K5378012</a>.</p>
+                <p className="indent">We optimized the codon of <a href='https://parts.igem.org/Part:BBa_K3924011'>BBa_K3924011</a> and <a href='https://parts.igem.org/Part:BBa_K3924002'>BBa_K3924002</a>, and added two basic components accordingly, namely <a href='https://parts.igem.org/Part:BBa_K5378011'>BBa_K5378011</a> and <a href='https://parts.igem.org/Part:BBa_K5378012'>BBa_K5378012</a>.</p>
                 </Element>