diff --git a/doc/src/angle_cosine_squared_restricted.rst b/doc/src/angle_cosine_squared_restricted.rst
index 5417a3b050..c80a9142ff 100644
--- a/doc/src/angle_cosine_squared_restricted.rst
+++ b/doc/src/angle_cosine_squared_restricted.rst
@@ -24,6 +24,8 @@ Examples
 Description
 """""""""""
 
+.. versionadded:: TBD
+
 The *cosine/squared/restricted* angle style uses the potential
 
 .. math::
diff --git a/doc/src/dihedral_cosine_squared_restricted.rst b/doc/src/dihedral_cosine_squared_restricted.rst
index 593ef44fc9..cba846b965 100644
--- a/doc/src/dihedral_cosine_squared_restricted.rst
+++ b/doc/src/dihedral_cosine_squared_restricted.rst
@@ -22,6 +22,8 @@ Examples
 Description
 """""""""""
 
+.. versionadded:: TBD
+
 The *cosine/squared/restricted* dihedral style uses the potential
 
 .. math::