diff --git a/maintainers/maintainer-list.nix b/maintainers/maintainer-list.nix
index 343b75f6c0e2..03031b89177a 100644
--- a/maintainers/maintainer-list.nix
+++ b/maintainers/maintainer-list.nix
@@ -18989,6 +18989,12 @@
       fingerprint = "640B EDDE 9734 310A BFA3  B257 52ED AE6A 3995 AFAB";
     }];
   };
+  whiteley = {
+    email = "mattwhiteley@gmail.com";
+    github = "whiteley";
+    githubId = 2215;
+    name = "Matt Whiteley";
+  };
   WhittlesJr = {
     email = "alex.joseph.whitt@gmail.com";
     github = "WhittlesJr";
diff --git a/pkgs/by-name/si/simde/package.nix b/pkgs/by-name/si/simde/package.nix
index f6f3364f210e..c79cbf38f7cd 100644
--- a/pkgs/by-name/si/simde/package.nix
+++ b/pkgs/by-name/si/simde/package.nix
@@ -17,6 +17,7 @@ stdenv.mkDerivation rec {
     homepage = "https://simd-everywhere.github.io";
     description = "Implementations of SIMD instruction sets for systems which don't natively support them";
     license = with licenses; [mit];
+    maintainers = with maintainers; [ whiteley ];
     platforms = flatten (with platforms; [
       arm
       armv7