diff --git a/.gitignore b/.gitignore
index 0585548..9910ea9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -195,3 +195,5 @@
 /thunderbird-langpacks-140.12.0esr-20260615.tar.xz
 /thunderbird-140.13.0esr.processed-source.tar.xz
 /thunderbird-langpacks-140.13.0esr-20260722.tar.xz
+/thunderbird-140.14.0esr.processed-source.tar.xz
+/thunderbird-langpacks-140.14.0esr-20260818.tar.xz
diff --git a/sources b/sources
index 478a718..3ed3135 100644
--- a/sources
+++ b/sources
@@ -2,5 +2,5 @@ SHA512 (nss-3.112.0-1.el9_4.src.rpm) = 6386239e79f8095b05270b3c8b76ac9203b0df196
 SHA512 (cbindgen-vendor.tar.xz) = 2b8db32c0bca2fa27304ee4fd3a5cc38bc43a11500b23842747813d221e55719c51cf4c0e027e41857f58ce1e283ce97b69c2c7d1eae93ecbb08c2f729e2bf55
 SHA512 (nss-3.112.0-4.el8_2.src.rpm) = 59cca3df7a0ec6a731f4a36f8f560d496d240da0c16650f047ae686e683b883dc2630aedbe46a8b2cb21662c15f03f1efbe99da42055cc3a5418da4839e28da2
 SHA512 (nspr-4.36.0-2.el8_2.src.rpm) = fcc720afd2453a5110975fac9dd06f636491234780b62cbfcc235a485b4935e97c4f438292c686d27d9dc86b56f43399c024bee4fffcdff5f27c62d105310645
-SHA512 (thunderbird-140.13.0esr.processed-source.tar.xz) = 6134b1ea7e1752cc058a75eadbad36ea6d5a9fbf9a5a78829cd7b31f264fd258b592f4f49aca3e7820edca47116be8a223ca7addb23722a328983b8ad99dd8de
-SHA512 (thunderbird-langpacks-140.13.0esr-20260722.tar.xz) = 62ce94eef8e01234fb19372232c921a9173c4bb419f882ef7b42b66874f57cb3897cd60ad24d7c31be4dd5223bb914b53d0e24d1dc7b78cb39c53836a1327dee
+SHA512 (thunderbird-140.14.0esr.processed-source.tar.xz) = cdb7b0c68beb2f3ebe5b858ad8fafd527c180a67793c5c5f94d2c36428ad80bf27bc661ead9f48aca36d38d9af8d0579e7abf96f85b5c3d8d0eb1a9a1ecc50b0
+SHA512 (thunderbird-langpacks-140.14.0esr-20260818.tar.xz) = 03f9db414e24bfb85211ad2de47fa49c2cd5f464f2c593877191a4cd42adc3287c44e9f875a067f300c0416e29e5262fc3f86df399cdd3c3214581f1b36398b1
diff --git a/thunderbird.spec b/thunderbird.spec
index 3a59f1c..47224ea 100644
--- a/thunderbird.spec
+++ b/thunderbird.spec
@@ -145,7 +145,7 @@ end}
 
 Summary:        Mozilla Thunderbird mail/newsgroup client
 Name:           thunderbird
-Version:        140.13.0
+Version:        140.14.0
 Release:        1%{?dist}
 URL:            http://www.mozilla.org/projects/thunderbird/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
@@ -173,7 +173,7 @@ 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}-20260722.tar.xz
+Source1:        thunderbird-langpacks-%{version}%{?pre_version}-20260818.tar.xz
 %endif
 Source2:        cbindgen-vendor.tar.xz
 Source3:        process-official-tarball
@@ -1740,6 +1740,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #===============================================================================
 
 %changelog
+* Tue Aug 18 2026 Jan Horak <jhorak@redhat.com> - 140.14.0-1
+- Update to 140.14.0 ESR
+
 * Wed Jul 22 2026 Jan Horak <jhorak@redhat.com> - 140.13.0-1
 - Update to 140.13.0 ESR