diff --git a/.gitignore b/.gitignore
index 2dc4d23..4897c5a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -83,3 +83,8 @@ fldigi-3.20.20.tar.gz
 /fldigi-4.1.14.tar.gz
 /fldigi-4.1.15.tar.gz
 /fldigi-4.1.17.tar.gz
+/fldigi-4.1.18.tar.gz
+/fldigi-4.1.19.tar.gz
+/fldigi-4.1.20.tar.gz
+/fldigi-4.1.21.tar.gz
+/fldigi-4.1.23.tar.gz
diff --git a/fldigi.spec b/fldigi.spec
index aa81f89..26b403d 100644
--- a/fldigi.spec
+++ b/fldigi.spec
@@ -1,32 +1,42 @@
+# For test builds, should be set to 0 for release builds.
+%global alpha 0
+
 Name:           fldigi
-Version:        4.1.17
-Release:        1%{?dist}.1
+Version:        4.1.23
+Release:        2%{?dist}
 Summary:        Digital modem program for Linux
 
 License:        GPLv3+  
 URL:            http://www.w1hkj.com/Fldigi.html
+%if %{alpha}
+Source0:        http://www.w1hkj.com/alpha/%{name}/%{name}-%{version}.tar.gz
+%else
 Source0:        http://www.w1hkj.com/files/%{name}/%{name}-%{version}.tar.gz
+%endif
+
 Source100:      fldigi.appdata.xml
 
 #BuildRequires:  automake autoconf libtool
 
 BuildRequires:  asciidoc
+BuildRequires:  desktop-file-utils
+BuildRequires:  fltk-devel >= 1.3
+BuildRequires:  gettext
 BuildRequires:  gcc gcc-c++
 BuildRequires:  hamlib-devel
-BuildRequires:  fltk-devel >= 1.3
 %{?fedora:BuildRequires:  flxmlrpc-devel}
 %if 0%{?rhel} < 8
 BuildRequires:  fltk-static libXcursor-devel
 %endif
 BuildRequires:  libjpeg-devel
 BuildRequires:  libpng-devel
-BuildRequires:  portaudio-devel >= 19-4
 BuildRequires:  libsndfile-devel
-BuildRequires:  desktop-file-utils
 BuildRequires:  libsamplerate-devel
-BuildRequires:  pulseaudio-libs-devel
-BuildRequires:  gettext
 BuildRequires:  libXinerama-devel
+BuildRequires:  libudev-devel
+BuildRequires:  make
+BuildRequires:  portaudio-devel >= 19-4
+BuildRequires:  pulseaudio-libs-devel
 %if 0%{?fedora}
 # For appstream-util
 BuildRequires:  libappstream-glib
@@ -51,7 +61,7 @@ It is capable of transmitting and receiving frames of ARQ data via fldigi.
 
 
 %prep
-%autosetup -p1 -n %{name}-%{version}%{?prerel:.%{prerel}}
+%autosetup -p1 -n %{name}-%{version}
 
 
 %build
@@ -103,8 +113,50 @@ appstream-util validate-relax --nonet %{buildroot}%{_datadir}/appdata/*.appdata.
 
 
 %changelog
-* Thu Dec 17 2020 Richard Shaw <hobbes1069@gmail.com> - 4.1.17-1.1
-- Rebuild with hamlib 4.0. Previous built accidentally linked with hamlib 3.3.
+* Thu Jul 21 2022 Fedora Release Engineering <releng@fedoraproject.org> - 4.1.23-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_37_Mass_Rebuild
+
+* Wed Jul 20 2022 Richard Shaw <hobbes1069@gmail.com> - 4.1.23-1
+- Update to 4.1.23.
+
+* Wed May 04 2022 Richard Shaw <hobbes1069@gmail.com> - 4.1.21-1
+- Update to 4.1.21.
+
+* Thu Jan 20 2022 Fedora Release Engineering <releng@fedoraproject.org> - 4.1.20-6
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_36_Mass_Rebuild
+
+* Thu Dec 23 2021 Richard Shaw <hobbes1069@gmail.com> - 4.1.20-5
+- Rebuild for hamlib 4.4.
+
+* Thu Dec 23 2021 Richard Shaw <hobbes1069@gmail.com> - 4.1.20-4
+- f35-build-side-49088
+
+* Thu Dec 23 2021 Richard Shaw <hobbes1069@gmail.com> - 4.1.20-3
+- 36-build-side-49086
+
+* Tue Oct 12 2021 Richard Shaw <hobbes1069@gmail.com> - 4.1.20-2
+- Rebuild for hamlib 4.3.1.
+
+* Thu Aug 05 2021 Richard Shaw <hobbes1069@gmail.com> - 4.1.20-1
+- Update to 4.1.20.
+
+* Wed Jul 21 2021 Fedora Release Engineering <releng@fedoraproject.org> - 4.1.19-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_35_Mass_Rebuild
+
+* Sat Jun 26 2021 Richard Shaw <hobbes1069@gmail.com> - 4.1.19-1
+- Update to 4.1.19.
+
+* Sun May 30 2021 Richard Shaw <hobbes1069@gmail.com> - 4.1.18-3
+- Rebuild for hamlib 4.2.
+
+* Tue Feb 02 2021 Richard Shaw <hobbes1069@gmail.com> - 4.1.18-2
+- Rebuild for hamlib 4.1.
+
+* Fri Jan 29 2021 Richard Shaw <hobbes1069@gmail.com> - 4.1.18-1
+- Update to 4.1.18.
+
+* Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 4.1.17-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
 
 * Thu Dec 03 2020 Richard Shaw <hobbes1069@gmail.com> - 4.1.17-1
 - Update to 4.1.17.
diff --git a/sources b/sources
index bfb33e8..1b84ff0 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (fldigi-4.1.17.tar.gz) = 0a98dbca2c8db16b9a9da847a315964ab8c221070a25717f2df95e1fd1edb08bda6fab3992fa7188e5fbc6830e2abba624053fcc9d285a8a3375556bed90dfc9
+SHA512 (fldigi-4.1.23.tar.gz) = c01d579fb23325f097969cbb93bd488c8e0c61ef552097166c902a56ce119d7c20694df5cd76ae9b2cb485d68570720745d961b1f1dd9918c6f466f0441005fb