diff --git a/examples/no_std_example/Cargo.lock b/examples/no_std_example/Cargo.lock
index 1709dc6..48c3c25 100644
--- a/examples/no_std_example/Cargo.lock
+++ b/examples/no_std_example/Cargo.lock
@@ -47,14 +47,14 @@ dependencies = [
 
 [[package]]
 name = "nutype"
-version = "0.4.0"
+version = "0.4.1-beta.1"
 dependencies = [
  "nutype_macros",
 ]
 
 [[package]]
 name = "nutype_macros"
-version = "0.4.0"
+version = "0.4.1-beta.1"
 dependencies = [
  "cfg-if",
  "kinded",