diff --git a/.nvchecker.toml b/.nvchecker.toml
new file mode 100644
index 0000000000000000000000000000000000000000..744a06c29276baca78200c743084d34ad9f61929
--- /dev/null
+++ b/.nvchecker.toml
@@ -0,0 +1,4 @@
+[postfix]
+source = "regex"
+regex = "postfix-([\\d.]+)\\.tar\\.gz?"
+url = "https://high5.nl/mirrors/postfix-release/official/"