diff --git a/pkgs/by-name/sn/snmpcheck/package.nix b/pkgs/by-name/sn/snmpcheck/package.nix
index 70187ae0b091..93293876c0a8 100644
--- a/pkgs/by-name/sn/snmpcheck/package.nix
+++ b/pkgs/by-name/sn/snmpcheck/package.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation (finalAttrs: {
   pname = "snmpcheck";
   version = "1.9";
   src = fetchurl {
-    url = "http://www.nothink.org/codes/snmpcheck/snmpcheck-${finalAttrs.version}.rb";
+    url = "https://www.nothink.org/codes/snmpcheck/snmpcheck-${finalAttrs.version}.rb";
     sha256 = "sha256-9xkLqbgxU1uykx+M9QsbPAH8OI/Cqn9uw6ALe23Lbq0=";
     executable = true;
   };