diff --git a/hwdriver.c b/hwdriver.c
index 1aec5afd..387b46df 100644
--- a/hwdriver.c
+++ b/hwdriver.c
@@ -87,6 +87,10 @@ static struct sr_config_info sr_config_info_data[] = {
 		"Sound pressure level frequency weighting", NULL},
 	{SR_CONF_SPL_WEIGHT_TIME, SR_T_CHAR, "spl_weight_time",
 		"Sound pressure level time weighting", NULL},
+	{SR_CONF_HOLD_MAX, SR_T_BOOL, "hold_max",
+		"Hold max", NULL},
+	{SR_CONF_HOLD_MIN, SR_T_BOOL, "hold_min",
+		"Hold min", NULL},
 	{0, 0, NULL, NULL, NULL},
 };
 
diff --git a/libsigrok.h b/libsigrok.h
index 98f594b7..dbd0c594 100644
--- a/libsigrok.h
+++ b/libsigrok.h
@@ -671,6 +671,12 @@ enum {
 	/** Sound pressure level time weighting.  */
 	SR_CONF_SPL_WEIGHT_TIME,
 
+	/** Max hold mode. */
+	SR_CONF_HOLD_MAX,
+
+	/** Min hold mode. */
+	SR_CONF_HOLD_MIN,
+
 	/*--- Special stuff -------------------------------------------------*/
 
 	/** Scan options supported by the driver. */