diff --git a/changelog/66784.fixed.md b/changelog/66784.fixed.md
new file mode 100644
index 00000000000..afe9df887a5
--- /dev/null
+++ b/changelog/66784.fixed.md
@@ -0,0 +1,2 @@
+Fixed an issue where enabling `grain_opts` in the minion config would cause
+some core grains to be overwritten.