diff --git a/nixos/modules/security/pam.nix b/nixos/modules/security/pam.nix
index b7e1ea526535..c99615d5a636 100644
--- a/nixos/modules/security/pam.nix
+++ b/nixos/modules/security/pam.nix
@@ -943,6 +943,11 @@ let
       value.source = pkgs.writeText "${name}.pam" service.text;
     };
 
+  optionalSudoConfigForSSHAgentAuth = optionalString config.security.pam.enableSSHAgentAuth ''
+    # Keep SSH_AUTH_SOCK so that pam_ssh_agent_auth.so can do its magic.
+    Defaults env_keep+=SSH_AUTH_SOCK
+  '';
+
 in
 
 {
@@ -1532,9 +1537,7 @@ in
         concatLines
       ]);
 
-    security.sudo.extraConfig = optionalString config.security.pam.enableSSHAgentAuth ''
-      # Keep SSH_AUTH_SOCK so that pam_ssh_agent_auth.so can do its magic.
-      Defaults env_keep+=SSH_AUTH_SOCK
-    '';
-    };
+    security.sudo.extraConfig = optionalSudoConfigForSSHAgentAuth;
+    security.sudo-rs.extraConfig = optionalSudoConfigForSSHAgentAuth;
+  };
 }
diff --git a/nixos/modules/security/sudo-rs.nix b/nixos/modules/security/sudo-rs.nix
index 0c97b9e1d79a..f991675827ef 100644
--- a/nixos/modules/security/sudo-rs.nix
+++ b/nixos/modules/security/sudo-rs.nix
@@ -220,10 +220,6 @@ in
         # Don't edit this file. Set the NixOS options ‘security.sudo-rs.configFile’
         # or ‘security.sudo-rs.extraRules’ instead.
       ''
-      (optionalString enableSSHAgentAuth ''
-        # Keep SSH_AUTH_SOCK so that pam_ssh_agent_auth.so can do its magic.
-        Defaults env_keep+=SSH_AUTH_SOCK
-      '')
       (pipe cfg.extraRules [
         (filter (rule: length rule.commands != 0))
         (map (rule: [