diff --git a/pkgs/by-name/pr/prometheus-postfix-exporter/package.nix b/pkgs/by-name/pr/prometheus-postfix-exporter/package.nix
index 1ed957e1bd3f..126c1c58625b 100644
--- a/pkgs/by-name/pr/prometheus-postfix-exporter/package.nix
+++ b/pkgs/by-name/pr/prometheus-postfix-exporter/package.nix
@@ -10,16 +10,16 @@
 
 buildGoModule rec {
   pname = "postfix_exporter";
-  version = "0.18.0";
+  version = "0.19.0";
 
   src = fetchFromGitHub {
     owner = "Hsn723";
     repo = "postfix_exporter";
     tag = "v${version}";
-    sha256 = "sha256-xpzYhdmryUV3RKGgvqJkTpi3mv/0LMHoMiAZX+i0BmI=";
+    sha256 = "sha256-yswgmQ7nMXuU9FJAjg+k5d2nwze6i/4qNZSQvrUQJog=";
   };
 
-  vendorHash = "sha256-3jZWyaLoSAqjutmKp1RowvLuFVNnp+Vz+v8jL7fvzbo=";
+  vendorHash = "sha256-nQ2QuSMYwnedH8Z7V9umfZYv7NeAI+rzctUWlcZMXV8=";
 
   ldflags = [
     "-s"