diff --git a/nixos/modules/services/networking/syncthing.nix b/nixos/modules/services/networking/syncthing.nix
index 2e92fe51e90a..d77562701492 100644
--- a/nixos/modules/services/networking/syncthing.nix
+++ b/nixos/modules/services/networking/syncthing.nix
@@ -9,7 +9,7 @@ let
 
   devices = mapAttrsToList (name: device: {
     deviceID = device.id;
-    inherit (device) name addresses introducer;
+    inherit (device) name addresses introducer autoAcceptFolders;
   }) cfg.devices;
 
   folders = mapAttrsToList ( _: folder: {
@@ -149,6 +149,15 @@ in {
               '';
             };
 
+            autoAcceptFolders = mkOption {
+              type = types.bool;
+              default = false;
+              description = ''
+                Automatically create or share folders that this device advertises at the default path.
+                See <link xlink:href="https://docs.syncthing.net/users/config.html?highlight=autoaccept#config-file-format"/>.
+              '';
+            };
+
           };
         }));
       };
@@ -425,6 +434,15 @@ in {
         defaultText = literalExample "dataDir${optionalString cond " + \"/.config/syncthing\""}";
       };
 
+      extraFlags = mkOption {
+        type = types.listOf types.str;
+        default = [];
+        example = [ "--reset-deltas" ];
+        description = ''
+          Extra flags passed to the syncthing command in the service definition.
+        '';
+      };
+
       openDefaultPorts = mkOption {
         type = types.bool;
         default = false;
@@ -517,7 +535,7 @@ in {
             ${cfg.package}/bin/syncthing \
               -no-browser \
               -gui-address=${cfg.guiAddress} \
-              -home=${cfg.configDir}
+              -home=${cfg.configDir} ${escapeShellArgs cfg.extraFlags}
           '';
           MemoryDenyWriteExecute = true;
           NoNewPrivileges = true;