diff --git a/catgirl.1 b/catgirl.1
index 3f65618..1c782cf 100644
--- a/catgirl.1
+++ b/catgirl.1
@@ -1,4 +1,4 @@
-.Dd December 29, 2020
+.Dd December 30, 2020
 .Dt CATGIRL 1
 .Os
 .
@@ -339,6 +339,8 @@ Press
 twice to copy the current topic.
 .It Ic /whois Ar nick
 Query information about a user.
+.It Ic /whowas Ar nick
+Query past information about a user.
 .El
 .
 .Ss UI Commands
diff --git a/chat.h b/chat.h
index ccd8863..e1f6584 100644
--- a/chat.h
+++ b/chat.h
@@ -260,6 +260,7 @@ extern struct Replies {
 	uint topic;
 	uint who;
 	uint whois;
+	uint whowas;
 } replies;
 
 void handle(struct Message *msg);
diff --git a/command.c b/command.c
index bf5a2e3..de8d0ff 100644
--- a/command.c
+++ b/command.c
@@ -316,6 +316,13 @@ static void commandWhois(uint id, char *params) {
 	replies.whois += count;
 }
 
+static void commandWhowas(uint id, char *params) {
+	(void)id;
+	if (!params) return;
+	ircFormat("WHOWAS %s\r\n", params);
+	replies.whowas++;
+}
+
 static void commandNS(uint id, char *params) {
 	(void)id;
 	if (params) ircFormat("PRIVMSG NickServ :%s\r\n", params);
@@ -500,6 +507,7 @@ static const struct Handler {
 	{ "/uninvex", commandUninvex, 0 },
 	{ "/voice", commandVoice, 0 },
 	{ "/whois", commandWhois, 0 },
+	{ "/whowas", commandWhowas, 0 },
 	{ "/window", commandWindow, 0 },
 };
 
diff --git a/handle.c b/handle.c
index b648840..a771fa3 100644
--- a/handle.c
+++ b/handle.c
@@ -1058,12 +1058,12 @@ static void handleReplyWhoisUser(struct Message *msg) {
 
 static void handleReplyWhoisServer(struct Message *msg) {
 	require(msg, false, 4);
-	if (!replies.whois) return;
+	if (!replies.whois && !replies.whowas) return;
 	uiFormat(
 		Network, Warm, tagTime(msg),
-		"\3%02d%s\3\tis connected to %s (%s)",
+		"\3%02d%s\3\t%s connected to %s (%s)",
 		completeColor(Network, msg->params[1]), msg->params[1],
-		msg->params[2], msg->params[3]
+		(replies.whowas ? "was" : "is"), msg->params[2], msg->params[3]
 	);
 }
 
@@ -1135,6 +1135,26 @@ static void handleReplyEndOfWhois(struct Message *msg) {
 	replies.whois--;
 }
 
+static void handleReplyWhowasUser(struct Message *msg) {
+	require(msg, false, 6);
+	if (!replies.whowas) return;
+	completeTouch(Network, msg->params[1], hash(msg->params[2]));
+	uiFormat(
+		Network, Warm, tagTime(msg),
+		"\3%02d%s\3\twas %s!%s@%s (%s)",
+		hash(msg->params[2]), msg->params[1],
+		msg->params[1], msg->params[2], msg->params[3], msg->params[5]
+	);
+}
+
+static void handleReplyEndOfWhowas(struct Message *msg) {
+	require(msg, false, 2);
+	if (strcmp(msg->params[1], self.nick)) {
+		completeRemove(Network, msg->params[1]);
+	}
+	if (replies.whowas) replies.whowas--;
+}
+
 static void handleReplyAway(struct Message *msg) {
 	require(msg, false, 3);
 	// Might be part of a WHOIS response.
@@ -1300,6 +1320,7 @@ static const struct Handler {
 	{ "311", handleReplyWhoisUser },
 	{ "312", handleReplyWhoisServer },
 	{ "313", handleReplyWhoisGeneric },
+	{ "314", handleReplyWhowasUser },
 	{ "315", handleReplyEndOfWho },
 	{ "317", handleReplyWhoisIdle },
 	{ "318", handleReplyEndOfWhois },
@@ -1320,6 +1341,7 @@ static const struct Handler {
 	{ "366", handleReplyEndOfNames },
 	{ "367", handleReplyBanList },
 	{ "368", handleReplyEndOfBanList },
+	{ "369", handleReplyEndOfWhowas },
 	{ "372", handleReplyMOTD },
 	{ "378", handleReplyWhoisGeneric },
 	{ "379", handleReplyWhoisGeneric },