diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 5dddd8f1c5af5..bba03f8ccccd3 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -130,6 +130,8 @@ Improvements to Clang's diagnostics
 
 - Clang now diagnoses undefined behavior in constant expressions more consistently. This includes invalid shifts, and signed overflow in arithmetic.
 
+- -Wdangling-assignment-gsl is enabled by default.
+
 Improvements to Clang's time-trace
 ----------------------------------
 
diff --git a/clang/include/clang/Basic/DiagnosticSemaKinds.td b/clang/include/clang/Basic/DiagnosticSemaKinds.td
index 810abe4f23e31..50211a6ab5186 100644
--- a/clang/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/clang/include/clang/Basic/DiagnosticSemaKinds.td
@@ -10133,7 +10133,7 @@ def warn_dangling_lifetime_pointer : Warning<
   InGroup<DanglingGsl>;
 def warn_dangling_lifetime_pointer_assignment : Warning<"object backing the "
   "pointer %0 will be destroyed at the end of the full-expression">,
-  InGroup<DanglingAssignmentGsl>, DefaultIgnore;
+  InGroup<DanglingAssignmentGsl>;
 def warn_new_dangling_initializer_list : Warning<
   "array backing "
   "%select{initializer list subobject of the allocated object|"