diff --git a/src/projects/auth3/index.yaml b/src/projects/auth3/index.yaml
index a1699065..8c3d3893 100644
--- a/src/projects/auth3/index.yaml
+++ b/src/projects/auth3/index.yaml
@@ -1,5 +1,5 @@
 name: Auth3
-categories: infrastructure
+categories: [ infrastructure ]
 
 description: 'a privacy-preserved computing network into Web 3.0 that aims to unlock the value of data.'