diff --git a/source/intro.tex b/source/intro.tex
index ae03349682..dbc7f650ed 100644
--- a/source/intro.tex
+++ b/source/intro.tex
@@ -37,7 +37,7 @@
 \item ISO 8601:2004, \doccite{Data elements and interchange formats ---
 Information interchange --- Representation of dates and times}
 \item ISO/IEC 9899:2018, \doccite{Programming languages --- C}
-\item ISO/IEC 9945:2003, \doccite{Information Technology --- Portable
+\item ISO/IEC/IEEE 9945:2009, \doccite{Information Technology --- Portable
 Operating System Interface (POSIX
 \begin{footnote}
 POSIX\textregistered\ is a registered trademark of
@@ -46,6 +46,10 @@
 does not constitute an endorsement by ISO or IEC of this product.
 \end{footnote}%
 )}
+\item ISO/IEC/IEEE 9945:2009/Cor 1:2013, \doccite{Information Technology --- Portable
+Operating System Interface (POSIX), Technical Corrigendum 1}
+\item ISO/IEC/IEEE 9945:2009/Cor 2:2017, \doccite{Information Technology --- Portable
+Operating System Interface (POSIX), Technical Corrigendum 2}
 \item ISO/IEC 10646, \doccite{Information technology ---
 Universal Coded Character Set (UCS)}
 \item ISO/IEC 10646:2003,
diff --git a/source/iostreams.tex b/source/iostreams.tex
index ed9f3ba24f..cd09017767 100644
--- a/source/iostreams.tex
+++ b/source/iostreams.tex
@@ -11869,7 +11869,7 @@
 a pathname to a particular file in a file hierarchy. There may be multiple
 pathnames that resolve to the same file.
 \begin{example}
-POSIX specifies the mechanism in section 4.11, Pathname resolution.
+POSIX specifies the mechanism in section 4.12, Pathname resolution.
 \end{example}
 
 \begin{codeblock}
@@ -14765,7 +14765,7 @@
 construction of a \tcode{directory_iterator} for the directory, it is
 unspecified whether or not subsequently incrementing the iterator will ever
 result in an iterator referencing the removed or added directory entry. See
-POSIX \tcode{readdir_r}.
+POSIX \tcode{readdir}.
 \end{note}
 
 \rSec3[fs.dir.itr.members]{Members}
diff --git a/source/lib-intro.tex b/source/lib-intro.tex
index f4217f5686..030b461297 100644
--- a/source/lib-intro.tex
+++ b/source/lib-intro.tex
@@ -2307,7 +2307,7 @@
 or to a namespace within namespace
 \tcode{posix}
 unless otherwise specified. The namespace \tcode{posix} is reserved for use by
-ISO/IEC 9945 and other POSIX standards.
+ISO/IEC/IEEE 9945 and other POSIX standards.
 
 \rSec4[namespace.future]{Namespaces for future standardization}