diff --git a/siunitx-code.tex b/siunitx-code.tex
index f392a617..9560c80a 100644
--- a/siunitx-code.tex
+++ b/siunitx-code.tex
@@ -49,6 +49,10 @@
 \ExplSyntaxOff
 \NewDocumentCommand\email{m}{\href{mailto:#1}{\nolinkurl{#1}}}
 \NewDocumentCommand\foreign{m}{\textit{#1}}
+\NewDocumentCommand\version{m}{\ensuremath{#1}}
+\ExpandArgs{c}\NewDocumentCommand{version (pdfstring context)}{m}{#1}
+\pdfstringdefDisableCommands{%
+  \ExpandArgs{Nc}\DeclareCommandCopy\version{version (pdfstring context)}}
 
 % Standard settings
 \EnableDocumentation
diff --git a/siunitx.dtx b/siunitx.dtx
index 566d5190..e0c6fb45 100644
--- a/siunitx.dtx
+++ b/siunitx.dtx
@@ -28,6 +28,10 @@
 \documentclass{l3doc}
 % Additional commands needed in this source
 \ProvideDocumentCommand\email{m}{\href{mailto:#1}{\nolinkurl{#1}}}
+\ProvideDocumentCommand\version{m}{\ensuremath{#1}}
+\ExpandArgs{c}\ProvideDocumentCommand{version (pdfstring context)}{m}{#1}
+\pdfstringdefDisableCommands{%
+  \ExpandArgs{Nc}\DeclareCommandCopy\version{version (pdfstring context)}}
 % The next line is needed so that \GetFileInfo will be able to pick up
 % version data
 \usepackage{siunitx}