diff --git a/changelog/379.bugfix.rst b/changelog/379.bugfix.rst
new file mode 100644
index 0000000..f77ad12
--- /dev/null
+++ b/changelog/379.bugfix.rst
@@ -0,0 +1,2 @@
+Attributes of _WARNING_DETAILS are checked to make sure they can be dumped
+prior to serializing the warning for submission to the master node.