diff --git a/pkgs/servers/monitoring/prometheus/postfix-exporter.nix b/pkgs/servers/monitoring/prometheus/postfix-exporter.nix
index 5ae8b92f3d9c8..14487935f6ac0 100644
--- a/pkgs/servers/monitoring/prometheus/postfix-exporter.nix
+++ b/pkgs/servers/monitoring/prometheus/postfix-exporter.nix
@@ -10,16 +10,16 @@
 
 buildGoModule rec {
   pname = "postfix_exporter";
-  version = "0.3.0";
+  version = "0.7.0";
 
   src = fetchFromGitHub {
-    owner = "kumina";
+    owner = "Hsn723";
     repo = "postfix_exporter";
-    rev = version;
-    sha256 = "sha256-63ze51Qbjm+3CV1OFGFa9cS4ucZ+gMKaJyBF2b//CfM=";
+    tag = "v${version}";
+    sha256 = "sha256-Bu8Y0UgB9D8psfRg/TRZqWqP5bj1+dWtAihLwCL+cTQ=";
   };
 
-  vendorHash = "sha256-a4Lk4wh4mvXEjLgFksZIVVtbp+zTUyjtLVuk7vuot2k=";
+  vendorHash = "sha256-GkEHFcclILMst1je/1N7NNnO6F/LMv+e5Abq3uqtH+k=";
 
   ldflags = [
     "-s"