diff --git a/Help/policy/CMP0118.rst b/Help/policy/CMP0118.rst
index 8e713201ff..b43a766b5d 100644
--- a/Help/policy/CMP0118.rst
+++ b/Help/policy/CMP0118.rst
@@ -1,6 +1,8 @@
 CMP0118
 -------
 
+.. versionadded:: 3.20
+
 The :prop_sf:`GENERATED` source file property is now visible in all directories.
 
 Whether or not a source file is generated is an all-or-nothing global
diff --git a/Help/prop_tgt/UNITY_BUILD_UNIQUE_ID.rst b/Help/prop_tgt/UNITY_BUILD_UNIQUE_ID.rst
index e0ee30e537..2c95e027c1 100644
--- a/Help/prop_tgt/UNITY_BUILD_UNIQUE_ID.rst
+++ b/Help/prop_tgt/UNITY_BUILD_UNIQUE_ID.rst
@@ -1,6 +1,8 @@
 UNITY_BUILD_UNIQUE_ID
 ---------------------
 
+.. versionadded:: 3.20
+
 The name of a valid C-identifier which is set to a unique per-file
 value during unity builds.
 
diff --git a/Help/variable/CMAKE_UNITY_BUILD_UNIQUE_ID.rst b/Help/variable/CMAKE_UNITY_BUILD_UNIQUE_ID.rst
index b30e443cff..64ef18ab8c 100644
--- a/Help/variable/CMAKE_UNITY_BUILD_UNIQUE_ID.rst
+++ b/Help/variable/CMAKE_UNITY_BUILD_UNIQUE_ID.rst
@@ -1,6 +1,8 @@
 CMAKE_UNITY_BUILD_UNIQUE_ID
 ---------------------------
 
+.. versionadded:: 3.20
+
 This variable is used to initialize the :prop_tgt:`UNITY_BUILD_UNIQUE_ID`
 property of targets when they are created.  It specifies the name of the
 unique identifier generated per file in a unity build.