diff --git a/.changes/v1.15/ENHANCEMENTS-20260223-130341.yaml b/.changes/v1.15/ENHANCEMENTS-20260223-130341.yaml
new file mode 100644
index 0000000000..1393968cfc
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+++ b/.changes/v1.15/ENHANCEMENTS-20260223-130341.yaml
@@ -0,0 +1,5 @@
+kind: ENHANCEMENTS
+body: "mocking: computed values are now correctly filled for nested list, set, and map attributes when using mock and override data in tests."
+time: 2026-02-23T13:03:41.913383+01:00
+custom:
+  Issue: "37939"