diff --git a/overlays/fcitx5/rime-data-flypy/share/rime-data/flypy_user.txt b/overlays/fcitx5/rime-data-flypy/share/rime-data/flypy_user.txt
index b4dbf555..d7046ad9 100644
--- a/overlays/fcitx5/rime-data-flypy/share/rime-data/flypy_user.txt
+++ b/overlays/fcitx5/rime-data-flypy/share/rime-data/flypy_user.txt
@@ -18,6 +18,9 @@
 # 符号
 Δ	delt
 
+# 补充缺失单字
+矽 xiux
+
 # 全码词
 杯子	bwzi
 即使	jiui