diff --git a/pkgs/applications/networking/mailreaders/neomutt/default.nix b/pkgs/applications/networking/mailreaders/neomutt/default.nix
index bc6dc831865f..5a94137ea2f3 100644
--- a/pkgs/applications/networking/mailreaders/neomutt/default.nix
+++ b/pkgs/applications/networking/mailreaders/neomutt/default.nix
@@ -31,6 +31,7 @@
   enableZstd ? true,
   enableMixmaster ? false,
   enableLua ? false,
+  enableSmimeKeys ? true,
   withContrib ? true,
 }:
 
@@ -118,6 +119,11 @@ stdenv.mkDerivation (finalAttrs: {
     ''
       wrapProgram "$out/bin/neomutt" --prefix PATH : "$out/libexec/neomutt"
     ''
+    + lib.optionalString enableSmimeKeys ''
+      install -m 755 $src/contrib/smime_keys $out/bin;
+      substituteInPlace $out/bin/smime_keys \
+        --replace-fail '/usr/bin/openssl' '${openssl}/bin/openssl';
+    ''
     # https://github.com/neomutt/neomutt-contrib
     # Contains vim-keys, keybindings presets and more.
     + lib.optionalString withContrib "${lib.getExe lndir} ${finalAttrs.passthru.contrib} $out/share/doc/neomutt";