diff --git a/src-ui/res/history.en.yaml b/src-ui/res/history.en.yaml
index 330659231..af3864350 100644
--- a/src-ui/res/history.en.yaml
+++ b/src-ui/res/history.en.yaml
@@ -228,3 +228,4 @@ zabajaba: This genre was invented by Eric Fox.
 fakearrow: This genre first appeared in Puzzle Communication Nikoli vol. 185.
 turnaround: This genre was invented by Ivan Adrian Koswara a.k.a. chaotic_iak.
 twinarea: This genre first appeared in Puzzle Communication Nikoli vol. 187.
+smullyan: This genre was invented by Zotmeister.
diff --git a/src-ui/res/history.ja.yaml b/src-ui/res/history.ja.yaml
index 023413f14..119607893 100644
--- a/src-ui/res/history.ja.yaml
+++ b/src-ui/res/history.ja.yaml
@@ -188,3 +188,4 @@ zabajaba: Eric Fox氏発案
 fakearrow: パズル通信ニコリ vol.185より
 turnaround: Ivan Adrian Koswara (chaotic_iak)氏発案
 twinarea: パズル通信ニコリ vol.187より
+smullyan: Zotmeister氏発案