diff --git a/docs/CommandGuide/llvmc.pod b/docs/CommandGuide/llvmc.pod
index 97445ed..86a721a 100644
--- a/docs/CommandGuide/llvmc.pod
+++ b/docs/CommandGuide/llvmc.pod
@@ -71,6 +71,11 @@
 I<--save-temps=cwd> and I<--save-temps> switches are both synonyms for the
 default behaviour.
 
+=item B<--temp-dir> I<directory>
+
+Write temporary files to the specified directory. This option overrides
+I<--save-temps>.
+
 =item B<--help>
 
 Print a summary of command-line options and exit.