diff --git a/.gitignore b/.gitignore
index 7943a8b..a3e5758 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,4 @@
 /v0.0.9.tar.gz
 /v0.1.0.tar.gz
 /v0.3.tar.gz
+/v0.4.0.tar.gz
diff --git a/libbpf.spec b/libbpf.spec
index 6ba4adb..8cd3b9b 100644
--- a/libbpf.spec
+++ b/libbpf.spec
@@ -1,10 +1,10 @@
 %global githubname   libbpf
-%global githubver    0.3
+%global githubver    0.4.0
 %global githubfull   %{githubname}-%{githubver}
 
 Name:           %{githubname}
-Version:        %{githubver}.0
-Release:        2%{?dist}
+Version:        %{githubver}
+Release:        1%{?dist}
 Summary:        Libbpf library
 
 License:        LGPLv2 or BSD
@@ -67,6 +67,9 @@ developing applications that use %{name}
 %{_libdir}/libbpf.a
 
 %changelog
+* Wed May 26 2021 Jiri Olsa <jolsa@redhat.com> - 2:0.4.0-1
+- release 0.4.0-1
+
 * Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 2:0.3.0-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
 
diff --git a/sources b/sources
index 5c6343b..4cb6216 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (v0.3.tar.gz) = 91c3368626e731b5868fd1bb6d16bd049b2ed0d5cbf966647fa1069cf8c912d91f3d734f05353a0c16c8ff03790ca8e1e6515fff66e4a76d70ffdf2dbac6d8e3
+SHA512 (v0.4.0.tar.gz) = 5d247f724f0dd3b2dadcc1ac10026ac57d3029b9dd7eb2831e282c58a4143042ef024170781139d89d85c4e9a3849b9ec0d3604a00bb3433be7622682b6dabc1