diff --git a/sources b/sources
index 8c35751..a5e35b9 100644
--- a/sources
+++ b/sources
@@ -2,5 +2,5 @@ SHA512 (nspr-4.35.0-1.el8_1.src.rpm) = 5123a443fcc42602e31104999be339ae899eb7b1f
 SHA512 (cbindgen-vendor.tar.xz) = 0c7a40033ccd38dadd30ad064feef390444af4562be07d3dfd0c4cccc55821b01b5228ddee367d0af3bd1b4ef9b1552cdd104506579b020ac1940a7c536b8b68
 SHA512 (nss-3.101.0-7.el9_2.src.rpm) = 7c325e0e437c1266031af02b3a026d20b789548ae435be6c39d710aa9d19c967ac0a79097fd50dd8ab878bf0d72c19e937d54863aa8cd0654ef2ef288e3102ec
 SHA512 (nss-3.101.0-7.el8_2.src.rpm) = c25551b06cf9239bb54aaf3edaea2c60804b449de4e06af4f5192bc181b5c6468ea8a69ddeff9de1b11bfc123e894b1ce8fc5d6deddfd5062f8736b75db56f8d
-SHA512 (thunderbird-128.9.0esr.processed-source.tar.xz) = ea9551086be8ea8715f8e83a19162ce42400a59ff4b6d192c9b737db828f3dce325772f2e16d1438327bcb5fe1c9f54102a77b23ec2e005f0ee5a02467a311ac
-SHA512 (thunderbird-langpacks-128.9.0esr-20250326.tar.xz) = b9aa3d80bc8e88ca15bdc52c9bfaf420739847d11d5035c145115d8c40bc28ed8339a467e23fb54d3e48411520e824bb24d582bcfc5b00d6376ffef872c4ab5b
+SHA512 (thunderbird-128.9.0esr.b3.processed-source.tar.xz) = 445e2895574e121216467ef9d27f7fc287180257afdbb58e6b1a333dc9d26afaacacbf22588192c9ce31a84895b89998f7285eed154f458b61cf3ad9ddf9fb8d
+SHA512 (thunderbird-langpacks-128.9.0esr-20250331.tar.xz) = 0d80d78e4ba833bf6b3c66e89dc88d65fa3a66332acfc4dd984a63e39f477061c5e49d06ac81f3d0c30a96fcfb3111cb0ee075efda7077d645c31cc08dd27d96
diff --git a/thunderbird.spec b/thunderbird.spec
index 4e668cb..e84acd3 100644
--- a/thunderbird.spec
+++ b/thunderbird.spec
@@ -127,7 +127,7 @@ end}
 # If set to .b2 or .b3 ... the processed source file needs to be renamed before upload, e.g.
 # thunderbird-102.8.0.b2.processed-source.tar.xz
 # When unset use processed source file name as is.
-#global buildnum .b2
+%global buildnum .b3
 
 %bcond_without langpacks
 
@@ -138,7 +138,7 @@ end}
 Summary:        Mozilla Thunderbird mail/newsgroup client
 Name:           thunderbird
 Version:        128.9.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 URL:            http://www.mozilla.org/projects/thunderbird/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
 
@@ -165,7 +165,7 @@ ExcludeArch:    %{ix86}
 #Source0:        https://archive.mozilla.org/pub/thunderbird/releases/%%{version}%%{?pre_version}/source/thunderbird-%%{version}%%{?pre_version}.processed-source.tar.xz
 Source0:        thunderbird-%{version}%{?pre_version}%{?buildnum}.processed-source.tar.xz
 %if %{with langpacks}
-Source1:        thunderbird-langpacks-%{version}%{?pre_version}-20250326.tar.xz
+Source1:        thunderbird-langpacks-%{version}%{?pre_version}-20250331.tar.xz
 %endif
 Source2:        cbindgen-vendor.tar.xz
 Source3:        process-official-tarball
@@ -1657,6 +1657,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #===============================================================================
 
 %changelog
+* Mon Mar 31 2025 Eike Rathke <erack@redhat.com> - 128.9.0-2
+- Update to 128.9.0 build3
+
 * Wed Mar 26 2025 Eike Rathke <erack@redhat.com> - 128.9.0-1
 - Update to 128.9.0 build1