diff --git a/src/databricks/labs/ucx/source_code/known.json b/src/databricks/labs/ucx/source_code/known.json
index 9e06808969..130d02fa87 100644
--- a/src/databricks/labs/ucx/source_code/known.json
+++ b/src/databricks/labs/ucx/source_code/known.json
@@ -1486,6 +1486,12 @@
   "cycler": {
     "cycler": []
   },
+  "cymem": {
+    "cymem": [],
+    "cymem.about": [],
+    "cymem.tests": [],
+    "cymem.tests.test_import": []
+  },
   "cython": {
     "Cython.Build.BuildExecutable": [],
     "Cython.Build.Cythonize": [],