diff --git a/Doc/lib/libfuncs.tex b/Doc/lib/libfuncs.tex
index 1aedf64..7fdb599 100644
--- a/Doc/lib/libfuncs.tex
+++ b/Doc/lib/libfuncs.tex
@@ -669,6 +669,7 @@
 \code{u'a'}.  This is the inverse of \function{ord()} for Unicode
 strings.  The argument must be in the range [0..65535], inclusive.
 \exception{ValueError} is raised otherwise.
+\versionadded{1.6}
 \end{funcdesc}
 
 \begin{funcdesc}{unicode}{string\optional{, encoding='utf-8'\optional{, errors='strict'}}}
@@ -676,6 +677,7 @@
 handling is done according to \var{errors}.  The default behavior is
 to decode UTF-8 in strict mode, meaning that encoding errors raise
 \exception{ValueError}.
+\versionadded{1.6}
 \end{funcdesc}
 
 \begin{funcdesc}{vars}{\optional{object}}