diff --git a/pkgs/servers/monitoring/nagios/plugins/check_ssl_cert.nix b/pkgs/servers/monitoring/nagios/plugins/check_ssl_cert.nix
index 3d811c394cf9..cdfd8ab9beeb 100644
--- a/pkgs/servers/monitoring/nagios/plugins/check_ssl_cert.nix
+++ b/pkgs/servers/monitoring/nagios/plugins/check_ssl_cert.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, file, openssl, makeWrapper, which, curl }:
+{ stdenv, fetchFromGitHub, file, openssl, makeWrapper, which, curl, fetchpatch }:
 
 stdenv.mkDerivation rec {
   name = "check_ssl_cert-${version}";
@@ -11,10 +11,13 @@ stdenv.mkDerivation rec {
     sha256 = "1jkwii45hynil1jail9gmz4bak066rdi8zfcczicjsa6npbz50w4";
   };
 
-  postPatch = ''
-    substituteInPlace Makefile \
-      --replace 'YEAR=`date +"%Y"`' 'YEAR=2018'
-  '';
+  patches = [
+    # https://github.com/matteocorti/check_ssl_cert/pull/114
+    (fetchpatch {
+      url = "https://github.com/matteocorti/check_ssl_cert/commit/2b7aad583d507a70605dd44d918739a65b267bfd.patch";
+      sha256 = "1jk872jgm6k3qc1ks1h3v6p804spjlnxcj2wc8v0hkmwfwiwd2k4";
+    })
+  ];
 
   nativeBuildInputs = [ makeWrapper ];