diff --git a/README.md b/README.md
index 7016b788c3..069425e928 100644
--- a/README.md
+++ b/README.md
@@ -910,7 +910,7 @@ Starting server with database localhost:6379 on port 1337…
 Variables, strings, concatenation, path joining, and substitution using `{{…}}` are supported:
 
 ```just
-tmpdir  := `mktemp`
+tmpdir  := `mktemp -d`
 version := "0.2.7"
 tardir  := tmpdir / "awesomesauce-" + version
 tarball := tardir + ".tar.gz"
diff --git "a/README.\344\270\255\346\226\207.md" "b/README.\344\270\255\346\226\207.md"
index 37b005b7db..4626a83b6f 100644
--- "a/README.\344\270\255\346\226\207.md"
+++ "b/README.\344\270\255\346\226\207.md"
@@ -890,7 +890,7 @@ Starting server with database localhost:6379 on port 1337…
 支持在变量、字符串、拼接、路径连接和替换中使用 `{{…}}` ：
 
 ```just
-tmpdir  := `mktemp`
+tmpdir  := `mktemp -d`
 version := "0.2.7"
 tardir  := tmpdir / "awesomesauce-" + version
 tarball := tardir + ".tar.gz"