diff --git a/catalog.json b/catalog.json
index 7f5b75bd..a49588ca 100644
--- a/catalog.json
+++ b/catalog.json
@@ -964,7 +964,8 @@
           "description": "Projects for working with data structures such as vectors and data frames.",
           "projects": [
             "daru-io",
-            "rasn1"
+            "rasn1",
+            "polars-df"
           ],
           "permalink": "structures"
         },