diff --git a/NEWS b/NEWS
index 9ab5fee..09ede30 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,8 @@
+New in version 0.4.0:
+- support partial object manipulation
+- fixed temporary directories removal
+- build system cleanup
+
 New in version 0.3.0:
 - fix FreeBSD ports upgrade path
 
diff --git a/configure.ac b/configure.ac
index 857bcdc..321cfec 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 AC_PREREQ([2.69])
-AC_INIT([simple-mtpfs],[0.3.0],[phatina@gmail.com])
+AC_INIT([simple-mtpfs],[0.4.0],[peter@hatina.eu])
 
 AC_CONFIG_MACRO_DIR([m4])
 
@@ -11,7 +11,7 @@ AC_LANG([C++])
 AC_PROG_CXX
 AC_PROG_INSTALL
 
-AX_CXX_COMPILE_STDCXX_11([noext])
+AX_CXX_COMPILE_STDCXX_17([noext])
 AX_CXXFLAGS_WARN_ALL
 AC_CHECK_LIB([mtp], [LIBMTP_Init], [], [AC_MSG_ERROR([libmtp not found])])
 AC_CHECK_LIB([mtp], [LIBMTP_Check_Capability],
diff --git a/debian/changelog b/debian/changelog
index 59790a6..e07d123 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+simple-mtpfs (0.4.0-1) unstable; urgency=low
+
+  * Upgrade to 0.4.0
+
+ -- Peter Hatina <peter@hatina.eu>  Wed, 22 Jul 2020 21:10:16 +0100
+
 simple-mtpfs (0.3.0-1) unstable; urgency=low
 
   * Upgrade to 0.3.0
diff --git a/simple-mtpfs.spec b/simple-mtpfs.spec
index 3bc6e69..b43816d 100644
--- a/simple-mtpfs.spec
+++ b/simple-mtpfs.spec
@@ -1,10 +1,10 @@
 Name:          simple-mtpfs
-Version:       0.3.0
+Version:       0.4.0
 Release:       1%{?dist}
 Summary:       Fuse-based MTP driver
 License:       GPLv2+
 URL:           https://github.com/phatina/simple-mtpfs
-Source0:       https://github.com/downloads/phatina/simple-mtpfs/%{name}-%{version}.tar.gz
+Source0:       https://github.com/phatina/simple-mtpfs/archive/v%{version}.tar.gz
 
 BuildRequires: fuse-devel >= 2.7.3
 BuildRequires: libmtp-devel
@@ -34,6 +34,9 @@ make install DESTDIR=$RPM_BUILD_ROOT
 %{_mandir}/man1/simple-mtpfs.1.gz
 
 %changelog
+* Wed Jul 22 2020 Peter Hatina <peter@hatina.eu> - 0.4.0-1
+- upgrade to v0.4.0
+
 * Sun Dec 25 2016 Peter Hatina <phatina@gmail.com> - 0.3.0-1
 - upgrade to v0.3.0