diff --git a/src/databricks/labs/ucx/source_code/known.json b/src/databricks/labs/ucx/source_code/known.json
index e9974c6937..21c0ef961b 100644
--- a/src/databricks/labs/ucx/source_code/known.json
+++ b/src/databricks/labs/ucx/source_code/known.json
@@ -1202,6 +1202,10 @@
     "chispa.structfield_comparer": [],
     "chispa.terminal_str_formatter": []
   },
+  "chronos": {
+    "chronos": [],
+    "chronos.main": []
+  },
   "clang": {
     "clang": [],
     "clang.cindex": [