diff --git a/lib/configuration-type.nix b/lib/configuration-type.nix
index 2fa9667..e2f708d 100644
--- a/lib/configuration-type.nix
+++ b/lib/configuration-type.nix
@@ -2,10 +2,10 @@
   folderType = lib.types.submodule ({name, ...}: {
     options = {
       id = lib.mkOption {
-        type = lib.types.string;
+        type = lib.types.str;
       };
       label = lib.mkOption {
-        type = lib.types.string;
+        type = lib.types.str;
         default = name;
       };
     };
@@ -19,11 +19,11 @@ in {
     type = lib.types.attrsOf (lib.types.submodule ({name, ...}: {
       options = {
         name = lib.mkOption {
-          type = lib.types.string;
+          type = lib.types.str;
           default = name;
         };
         id = lib.mkOption {
-          type = lib.types.string;
+          type = lib.types.str;
         };
         folders = lib.mkOption {
           type = lib.types.attrsOf (lib.types.submodule (
@@ -33,7 +33,7 @@ in {
                   type = folderType;
                 };
                 path = lib.mkOption {
-                  type = lib.types.string;
+                  type = lib.types.str;
                 };
                 type = lib.mkOption {
                   type = lib.types.enum ["sendreceive" "sendonly" "receiveonly" "receiveencrypted"];
@@ -43,25 +43,25 @@ in {
                   simple = {
                     enable = lib.mkEnableOption "should this folder use simple versioning";
                     keep = lib.mkOption {
-                      type = lib.types.string;
+                      type = lib.types.str;
                       default = "10";
                     };
                   };
                   trashcan = {
                     enable = lib.mkEnableOption "should this folder use trashcan versioning";
                     cleanoutDays = lib.mkOption {
-                      type = lib.types.string;
+                      type = lib.types.str;
                       default = "1000";
                     };
                   };
                   staggered = {
                     enable = lib.mkEnableOption "should this folder use staggard versioning";
                     cleanInterval = lib.mkOption {
-                      type = lib.types.string;
+                      type = lib.types.str;
                       default = "3600";
                     };
                     maxAge = lib.mkOption {
-                      type = lib.types.string;
+                      type = lib.types.str;
                       default = "31536000";
                     };
                   };
diff --git a/lib/nixos-module.nix b/lib/nixos-module.nix
index 68c413a..4db4fd6 100644
--- a/lib/nixos-module.nix
+++ b/lib/nixos-module.nix
@@ -7,7 +7,7 @@
     services.syncthing = {
       configuration = (import ./configuration-type.nix) input;
       deviceName = lib.mkOption {
-        type = lib.types.string;
+        type = lib.types.str;
       };
     };
   };