diff --git a/.gitignore b/.gitignore
index b91bf1d..a6ea279 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1 @@
-/1.49.1.tar.gz
-/1.49.2.tar.gz
-/1.50.tar.gz
+/espeak-ng-*.tar.gz
diff --git a/0001-fix-699-avoid-samplerate-clashing-with-LTO-in-gcc-10.patch b/0001-fix-699-avoid-samplerate-clashing-with-LTO-in-gcc-10.patch
deleted file mode 100644
index f4a71be..0000000
--- a/0001-fix-699-avoid-samplerate-clashing-with-LTO-in-gcc-10.patch
+++ /dev/null
@@ -1,25 +0,0 @@
-From e11cd42b03d1628f7a0cf45c9406123282e25c63 Mon Sep 17 00:00:00 2001
-From: "Reece H. Dunn" <msclrhd@gmail.com>
-Date: Thu, 9 Jan 2020 21:11:42 +0000
-Subject: [PATCH] fix #699: avoid samplerate clashing with LTO in gcc 10.
-
----
- src/espeak-ng.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/src/espeak-ng.c b/src/espeak-ng.c
-index 10b8a887..3a7838cf 100644
---- a/src/espeak-ng.c
-+++ b/src/espeak-ng.c
-@@ -117,7 +117,7 @@ static const char *help_text =
-     "--load     Load voice from a file in current directory by name.\n"
-     "-h, --help Show this help.\n";
- 
--int samplerate;
-+static int samplerate;
- bool quiet = false;
- unsigned int samples_total = 0;
- unsigned int samples_split = 0;
--- 
-2.20.1
-
diff --git a/espeak-ng.spec b/espeak-ng.spec
index 83bfd8c..16f152c 100644
--- a/espeak-ng.spec
+++ b/espeak-ng.spec
@@ -1,17 +1,21 @@
-Name:           espeak-ng
-Version:        1.50
-Release:        7%{?dist}
-Summary:        eSpeak NG Text-to-Speech
+Name:          espeak-ng
+Version:       1.51
+Release:       1%{?dist}
+Summary:       eSpeak NG Text-to-Speech
 
-License:        GPLv3+
-URL:            https://github.com/espeak-ng/espeak-ng
-Source0:        %{url}/archive/%{version}.tar.gz
+License:       GPLv3+
+URL:           https://github.com/espeak-ng/espeak-ng
+Source0:       %{url}/archive/%{version}/%{name}-%{version}.tar.gz
 
-BuildRequires:  gcc make autoconf automake libtool pkgconfig
-BuildRequires:  rubygem-ronn rubygem-kramdown
-BuildRequires:  pcaudiolib-devel
-
-Patch0:         0001-fix-699-avoid-samplerate-clashing-with-LTO-in-gcc-10.patch
+BuildRequires: gcc-g++
+BuildRequires: make
+BuildRequires: autoconf
+BuildRequires: automake
+BuildRequires: libtool
+BuildRequires: pkgconfig
+BuildRequires: rubygem-ronn
+BuildRequires: rubygem-kramdown
+BuildRequires: pcaudiolib-devel
 
 %description
 The eSpeak NG (Next Generation) Text-to-Speech program is an open source speech
@@ -74,7 +78,9 @@ ESPEAK_DATA_PATH=`pwd` LD_LIBRARY_PATH=src:${LD_LIBRARY_PATH} src/espeak-ng ...
 
 %files
 %license COPYING
-%license COPYING.IEEE
+%license COPYING.APACHE
+%license COPYING.BSD2
+%license COPYING.UCD
 %doc README.md
 %doc CHANGELOG.md
 %{_bindir}/speak-ng
@@ -99,6 +105,10 @@ ESPEAK_DATA_PATH=`pwd` LD_LIBRARY_PATH=src:${LD_LIBRARY_PATH} src/espeak-ng ...
 %doc docs/*.html
 
 %changelog
+* Thu Apr  7 2022 Jaroslav Škarvada <jskarvad@redhat.com> - 1.51-1
+- New version
+  Resolves: rhbz#2071446
+
 * Thu Jan 20 2022 Fedora Release Engineering <releng@fedoraproject.org> - 1.50-7
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_36_Mass_Rebuild
 
diff --git a/sources b/sources
index 14cc764..a362d76 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (1.50.tar.gz) = 297dd80a6cdae3e2b8acf6823475220ce89d6a5fb68ea303156ad52cb3e7388049b6921759d4ed4e3d2e2ebd19bf931259e454f74a2ac0b7ecf4ce56c1d60c0c
+SHA512 (espeak-ng-1.51.tar.gz) = 6c29275706d21de2d5fa393702d2f173fc05d2ce4e2f46f3bf9a2742b0a8f294177663df0d079188e31cc2541f2c21a64e09e8afffe95befab667a4d00429fd2