diff --git a/data.json b/data.json
index f0647cf..1c3babd 100644
--- a/data.json
+++ b/data.json
@@ -245,6 +245,7 @@
       "category": "C",
       "repos": [
         "aminroosta/sqlite_modern_cpp",
+        "persiancal/jcal",
         "hamidreza-s/NanoChat"
       ]
     },