diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst
--- a/llvm/docs/LangRef.rst
+++ b/llvm/docs/LangRef.rst
@@ -5312,6 +5312,7 @@
   DW_TAG_volatile_type      = 53
   DW_TAG_restrict_type      = 55
   DW_TAG_atomic_type        = 71
+  DW_TAG_immutable_type     = 75
 
 .. _DIDerivedTypeMember:
 
@@ -5328,8 +5329,8 @@
 ``DW_TAG_typedef`` is used to provide a name for the ``baseType:``.
 
 ``DW_TAG_pointer_type``, ``DW_TAG_reference_type``, ``DW_TAG_const_type``,
-``DW_TAG_volatile_type``, ``DW_TAG_restrict_type`` and ``DW_TAG_atomic_type``
-are used to qualify the ``baseType:``.
+``DW_TAG_volatile_type``, ``DW_TAG_restrict_type``, ``DW_TAG_atomic_type`` and
+``DW_TAG_immutable_type`` are used to qualify the ``baseType:``.
 
 Note that the ``void *`` type is expressed as a type derived from NULL.
 
diff --git a/llvm/docs/SourceLevelDebugging.rst b/llvm/docs/SourceLevelDebugging.rst
--- a/llvm/docs/SourceLevelDebugging.rst
+++ b/llvm/docs/SourceLevelDebugging.rst
@@ -1881,6 +1881,7 @@
 * DW_TAG_subrange_type
 * DW_TAG_base_type
 * DW_TAG_const_type
+* DW_TAG_immutable_type
 * DW_TAG_file_type
 * DW_TAG_namelist
 * DW_TAG_packed_type