diff --git a/.gitattributes b/.gitattributes
index 0b3b64b..1b1f525 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,4 +1,5 @@
 src/** filter=git-crypt diff=git-crypt
+src/interface.ts filter=git-crypt diff=git-crypt !filter !diff
 
 # 指定文件的語言，並將 .min.js 文件計入語言統計
 *.ts linguist-language=JavaScript
diff --git a/interface.ts b/src/interface.ts
similarity index 100%
rename from interface.ts
rename to src/interface.ts