diff --git a/.gitignore b/.gitignore
index 09fbf40..4e0b625 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,2 @@
-pg_top-3.6.2.tar.bz2
-/pg_top-3.7.0.tar.bz2
+*.tar.bz2
+*.tar.xz
diff --git a/pg_top-3.6.2-fix-totals.patch b/pg_top-3.6.2-fix-totals.patch
deleted file mode 100644
index 322b716..0000000
--- a/pg_top-3.6.2-fix-totals.patch
+++ /dev/null
@@ -1,37 +0,0 @@
-diff -Narup pg_top-3.6.2/pg.c pg_top-3.6.2.new/pg.c
---- pg_top-3.6.2/pg.c	2008-04-03 08:37:46.000000000 +0400
-+++ pg_top-3.6.2.new/pg.c	2009-09-26 00:48:37.000000000 +0400
-@@ -798,9 +798,9 @@ update_index_stats(struct index_node * n
- 				   long long idx_tup_read, long long idx_tup_fetch)
- {
- 	/* Add to the index totals */
--	node->total_idx_scan += idx_scan;
--	node->total_idx_tup_read += idx_tup_read;
--	node->total_idx_tup_fetch += idx_tup_fetch;
-+	node->total_idx_scan = idx_scan;
-+	node->total_idx_tup_read = idx_tup_read;
-+	node->total_idx_tup_fetch = idx_tup_fetch;
- 
- 	/* Calculate difference between previous and current values. */
- 	node->diff_idx_scan = idx_scan - node->old_idx_scan;
-@@ -819,13 +819,13 @@ update_table_stats(struct table_node * n
- 			   long long n_tup_ins, long long n_tup_upd, long long n_tup_del)
- {
- 	/* Add to the table totals */
--	node->total_idx_scan += idx_scan;
--	node->total_idx_tup_fetch += idx_tup_fetch;
--	node->total_n_tup_del += n_tup_del;
--	node->total_n_tup_ins += n_tup_ins;
--	node->total_n_tup_upd += n_tup_upd;
--	node->total_seq_scan += seq_scan;
--	node->total_seq_tup_read += seq_tup_read;
-+	node->total_idx_scan = idx_scan;
-+	node->total_idx_tup_fetch = idx_tup_fetch;
-+	node->total_n_tup_del = n_tup_del;
-+	node->total_n_tup_ins = n_tup_ins;
-+	node->total_n_tup_upd = n_tup_upd;
-+	node->total_seq_scan = seq_scan;
-+	node->total_seq_tup_read = seq_tup_read;
- 
- 	/* Calculate difference between previous and current values. */
- 	node->diff_idx_scan = idx_scan - node->old_idx_scan;
diff --git a/pg_top.spec b/pg_top.spec
index 14a0af3..c13128b 100644
--- a/pg_top.spec
+++ b/pg_top.spec
@@ -1,21 +1,19 @@
 Summary:	'top' for PostgreSQL process
 Name:		pg_top
-Version:	3.7.0
-Release:	18%{?dist}
+Version:	4.0.0
+Release:	1%{?dist}
 License:	BSD
-Source0:	http://pgfoundry.org/frs/download.php/3504/%{name}-%{version}.tar.bz2
-URL:		http://pgfoundry.org/projects/ptop
-BuildRequires: make
-BuildRequires:	elfutils-libelf-devel
+Source0:	https://pg_top.gitlab.io/source/pg_top-4.0.0.tar.xz
+URL:		https://pg_top.gitlab.io/
+BuildRequires:	cmake
 BuildRequires:	gcc
 BuildRequires:	libpq-devel
 BuildRequires:	readline-devel
+BuildRequires:	libbsd-devel
 Requires:	postgresql-server
 
-%if 0%{?fedora} >= 10
-BuildRequires:	systemtap-sdt-devel
-%endif
-
+%undefine _hardened_build
+%global debug_package %{nil}
 
 %description
 pg_top is 'top' for PostgreSQL processes. See running queries, 
@@ -25,19 +23,24 @@ query plans, issued locks, and table and index statistics.
 %autosetup
 
 %build
-%configure
-make %{?_smp_mflags} CFLAGS="%{optflags}"
+%cmake
+%cmake_build
 
 %install
-install -Dp -m 755 %{name} %{buildroot}%{_bindir}/%{name}
-install -Dp -m 644 %{name}.1 %{buildroot}%{_mandir}/man1/%{name}.1
+%cmake_install
 
 %files
 %{_mandir}/man1/%{name}*
 %{_bindir}/%{name}
-%doc FAQ HISTORY LICENSE README TODO Y2K
+%doc HISTORY.rst README.rst TODO Y2K
+%license LICENSE
 
 %changelog
+* Mon Mar 08 2021 Mikel Olasagasti Uranga <mikel@olasagasti.info> - 4.0.0-1
+- Version update to 4.0.0
+- Change homepage
+- Add BR on libbsd-devel
+
 * Mon Feb 08 2021 Pavel Raiskup <praiskup@redhat.com> - 3.7.0-18
 - rebuild for libpq ABI fix rhbz#1908268
 
diff --git a/sources b/sources
index bc9cf0a..b019d1c 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-4d0c61a1aaa32f815d2e2452513fbfec  pg_top-3.7.0.tar.bz2
+SHA512 (pg_top-4.0.0.tar.xz) = b7a016137495ceecdcf0ac0e95c73b7eca20b57264f7b63b0a38c3f31db742c704ed0094e07f6df051bce9bc26214f5a8f66ced1e923bb66e0c86fff1e2ffc19