diff --git a/docs/sudo_plugin.man.in b/docs/sudo_plugin.man.in
index c36fe0014..e61c142e1 100644
--- a/docs/sudo_plugin.man.in
+++ b/docs/sudo_plugin.man.in
@@ -16,7 +16,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.TH "SUDO_PLUGIN" "5" "July 10, 2023" "Sudo @PACKAGE_VERSION@" "File Formats Manual"
+.TH "SUDO_PLUGIN" "5" "November 25, 2023" "Sudo @PACKAGE_VERSION@" "File Formats Manual"
 .nh
 .if n .ad l
 .SH "NAME"
@@ -674,10 +674,17 @@ process or 0 if there is no terminal present.
 Only available starting with API version 1.2.
 .TP 6n
 tty=string
-The path to the user's terminal device.
-If the user has no terminal device associated with the session,
-the value will be empty, as in
-\(oqtty=\(cq.
+The path to the user's terminal device, if one exists.
+This entry is only present if the user has a terminal device
+associated with the session.
+.TP 6n
+ttydev=dev_t
+The number of the user's terminal device, if one exists,
+in the form of a
+\fIdev_t\fR.
+This entry is only present if the user has a terminal device
+associated with the session.
+Only available starting with API version 1.22.
 .TP 6n
 uid=uid_t
 The real user-ID of the user invoking
@@ -5474,6 +5481,13 @@ The
 entry was added to the
 \fIcommand_info\fR
 list.
+.TP 6n
+Version 1.22 (sudo 1.9.16)
+The
+\fIttydev\fR
+entry was added to the
+\fIuser_info\fR
+list.
 .SH "SEE ALSO"
 sudo.conf(@mansectform@),
 sudoers(@mansectform@),
diff --git a/docs/sudo_plugin.mdoc.in b/docs/sudo_plugin.mdoc.in
index b604dbe00..a8cd1c776 100644
--- a/docs/sudo_plugin.mdoc.in
+++ b/docs/sudo_plugin.mdoc.in
@@ -15,7 +15,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd July 10, 2023
+.Dd November 25, 2023
 .Dt SUDO_PLUGIN @mansectform@
 .Os Sudo @PACKAGE_VERSION@
 .Sh NAME
@@ -600,10 +600,16 @@ device associated with the
 process or 0 if there is no terminal present.
 Only available starting with API version 1.2.
 .It tty=string
-The path to the user's terminal device.
-If the user has no terminal device associated with the session,
-the value will be empty, as in
-.Ql tty= .
+The path to the user's terminal device, if one exists.
+This entry is only present if the user has a terminal device
+associated with the session.
+.It ttydev=dev_t
+The number of the user's terminal device, if one exists,
+in the form of a
+.Vt dev_t .
+This entry is only present if the user has a terminal device
+associated with the session.
+Only available starting with API version 1.22.
 .It uid=uid_t
 The real user-ID of the user invoking
 .Nm sudo .
@@ -4857,6 +4863,12 @@ The
 entry was added to the
 .Fa command_info
 list.
+.It Version 1.22 (sudo 1.9.16)
+The
+.Em ttydev
+entry was added to the
+.Fa user_info
+list.
 .El
 .Sh SEE ALSO
 .Xr sudo.conf @mansectform@ ,
diff --git a/include/sudo_plugin.h b/include/sudo_plugin.h
index 81a68aaf0..4a68f4692 100644
--- a/include/sudo_plugin.h
+++ b/include/sudo_plugin.h
@@ -21,7 +21,7 @@
 
 /* API version major/minor */
 #define SUDO_API_VERSION_MAJOR 1
-#define SUDO_API_VERSION_MINOR 21
+#define SUDO_API_VERSION_MINOR 22
 #define SUDO_API_MKVERSION(x, y) (((x) << 16) | (y))
 #define SUDO_API_VERSION SUDO_API_MKVERSION(SUDO_API_VERSION_MAJOR, SUDO_API_VERSION_MINOR)