diff --git a/Doc/api/concrete.tex b/Doc/api/concrete.tex
index f8cbc28..2c14596 100644
--- a/Doc/api/concrete.tex
+++ b/Doc/api/concrete.tex
@@ -2029,6 +2029,12 @@
   creation.
 \end{cfuncdesc}
 
+\begin{cfuncdesc}{int}{PyFile_Encoding}{PyFileObject *p, char *enc}
+  Set the file's encoding for Unicode output to \var{enc}. Return
+  1 on success and 0 on failure.
+  \versionadded{2.3}
+\end{cfuncdesc}
+
 \begin{cfuncdesc}{int}{PyFile_SoftSpace}{PyObject *p, int newflag}
   This function exists for internal use by the interpreter.  Sets the
   \member{softspace} attribute of \var{p} to \var{newflag} and
diff --git a/Doc/lib/libstdtypes.tex b/Doc/lib/libstdtypes.tex
index 04cdbca..951d088 100644
--- a/Doc/lib/libstdtypes.tex
+++ b/Doc/lib/libstdtypes.tex
@@ -1372,6 +1372,20 @@
 It may not be available on all file-like objects.
 \end{memberdesc}
 
+\begin{memberdesc}[file]{encoding}
+The encoding that this file uses. When Unicode strings are written
+to a file, they will be converted to byte strings using this encoding.
+In addition, when the file is connected to a terminal, the attribute
+gives the encoding that the terminal is likely to use (that 
+information might be incorrect if the user has misconfigured the 
+terminal). The attribute is read-only and may not be present on
+all file-like objects. It may also be \code{None}, in which case
+the file uses the system default encoding for converting Unicode
+strings.
+
+\versionadded{2.3}
+\end{memberdesc}
+
 \begin{memberdesc}[file]{mode}
 The I/O mode for the file.  If the file was created using the
 \function{open()} built-in function, this will be the value of the