diff --git a/pkgs/by-name/pr/prometheus-alertmanager/package.nix b/pkgs/by-name/pr/prometheus-alertmanager/package.nix
index 143ddd20f9c1..4116c98b671c 100644
--- a/pkgs/by-name/pr/prometheus-alertmanager/package.nix
+++ b/pkgs/by-name/pr/prometheus-alertmanager/package.nix
@@ -20,13 +20,13 @@ let
 in
 buildGoModule (finalAttrs: {
   pname = "alertmanager";
-  version = "0.33.0";
+  version = "0.33.1";
 
   src = fetchFromGitHub {
     owner = "prometheus";
     repo = "alertmanager";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-VXhu50KERPb4FDdcNDMftBqZVk2ipIphhejAE1wMSOk=";
+    hash = "sha256-LGjBuZ7kbtABunEk2YyCKILsPS/0FlS/6Mf/2qVpseI=";
   };
 
   postPatch = ''