diff --git a/Doc/library/dataclasses.rst b/Doc/library/dataclasses.rst
index e13685e207c..e4d2b57fd42 100644
--- a/Doc/library/dataclasses.rst
+++ b/Doc/library/dataclasses.rst
@@ -631,4 +631,4 @@ Exceptions
 
    Raised when an implicitly defined :meth:`__setattr__` or
    :meth:`__delattr__` is called on a dataclass which was defined with
-   ``frozen=True``.
+   ``frozen=True``. It is a subclass of :exc:`AttributeError`.
diff --git a/Misc/ACKS b/Misc/ACKS
index 7d9af855a74..a18ddc65b79 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1452,6 +1452,7 @@ Vlad Riscutia
 Wes Rishel
 Daniel Riti
 Juan M. Bello Rivas
+Llandy Riveron Del Risco
 Mohd Sanad Zaki Rizvi
 Davide Rizzo
 Anthony Roach
diff --git a/Misc/NEWS.d/next/Documentation/2021-04-25-22-44-27.bpo-43938.nC660q.rst b/Misc/NEWS.d/next/Documentation/2021-04-25-22-44-27.bpo-43938.nC660q.rst
new file mode 100644
index 00000000000..dcf252e21bb
--- /dev/null
+++ b/Misc/NEWS.d/next/Documentation/2021-04-25-22-44-27.bpo-43938.nC660q.rst
@@ -0,0 +1,2 @@
+Update dataclasses documentation to express that FrozenInstanceError is
+derived from AttributeError.