diff --git a/.gitignore b/.gitignore
index 9748149..684bdd2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 /pico-args-0.3.2.crate
 /pico-args-0.3.3.crate
 /pico-args-0.3.4.crate
+/pico-args-0.4.0.crate
diff --git a/rust-pico-args.spec b/rust-pico-args.spec
index e3b8865..da011aa 100644
--- a/rust-pico-args.spec
+++ b/rust-pico-args.spec
@@ -1,12 +1,12 @@
-# Generated by rust2rpm 13
+# Generated by rust2rpm 16
 %bcond_without check
 %global debug_package %{nil}
 
 %global crate pico-args
 
 Name:           rust-%{crate}
-Version:        0.3.4
-Release:        2%{?dist}
+Version:        0.4.0
+Release:        1%{?dist}
 Summary:        Ultra simple CLI arguments parser
 
 # Upstream license specification: MIT
@@ -95,6 +95,9 @@ which use "short-space-opt" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Thu Apr 08 2021 Fabio Valentini <decathorpe@gmail.com> - 0.4.0-1
+- Update to version 0.4.0.
+
 * Wed Jan 27 2021 Fedora Release Engineering <releng@fedoraproject.org> - 0.3.4-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
 
diff --git a/sources b/sources
index 58aab6d..bdeb522 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (pico-args-0.3.4.crate) = f53c955d3472623c1fc72c22604b032a431079eae7f41ffa3370c5f689df6fdf5d9ac9625a6dc61824a03ee3dd9c2e574d760c4cf3dfd6e564b9710c1dc6e719
+SHA512 (pico-args-0.4.0.crate) = c62733bb78be90bc1f4de07a8493c02b39a6604867588323636ae82e673ad2f09893bccd359df7891edddd6834193187431a3dc7db6bdfa14caa4be90c3f0927