diff --git a/cpp/ql/src/change-notes/2026-04-02-suspicious-add-sizeof.md b/cpp/ql/src/change-notes/2026-04-02-suspicious-add-sizeof.md
new file mode 100644
index 00000000000..040e89c1347
--- /dev/null
+++ b/cpp/ql/src/change-notes/2026-04-02-suspicious-add-sizeof.md
@@ -0,0 +1,4 @@
+---
+category: minorAnalysis
+---
+* The "Suspicious add with sizeof" (`cpp/suspicious-add-sizeof`) query has been upgraded to `high` precision. This query will now run in the default code scanning suite.