diff --git a/pkgs/servers/monitoring/nagios/plugins/check_ssl_cert.nix b/pkgs/servers/monitoring/nagios/plugins/check_ssl_cert.nix
index 9572c1d2c87e..c3098a8a8e27 100644
--- a/pkgs/servers/monitoring/nagios/plugins/check_ssl_cert.nix
+++ b/pkgs/servers/monitoring/nagios/plugins/check_ssl_cert.nix
@@ -17,13 +17,13 @@
 
 stdenv.mkDerivation rec {
   pname = "check_ssl_cert";
-  version = "2.81.0";
+  version = "2.81.1";
 
   src = fetchFromGitHub {
     owner = "matteocorti";
     repo = "check_ssl_cert";
     rev = "refs/tags/v${version}";
-    hash = "sha256-6C6shxu9ze0ffx6Mg2K9TkqJl98Wz7loTcCptg92IY8=";
+    hash = "sha256-ZF1izxIgpoQrWWI+G5vuAJsbc/IwUlAZHhUIHKCY2DA=";
   };
 
   nativeBuildInputs = [