diff --git a/.gitignore b/.gitignore
index 3d6f9ff..860cd51 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,5 +2,5 @@ SOURCES/cbindgen-vendor.tar.xz
 SOURCES/nspr-4.35.0-1.el8_1.src.rpm
 SOURCES/nss-3.90.0-2.el8_1.src.rpm
 SOURCES/nss-3.90.0-3.el9_0.src.rpm
-SOURCES/thunderbird-115.10.0.b2.processed-source.tar.xz
-SOURCES/thunderbird-langpacks-115.10.0-20240415.tar.xz
+SOURCES/thunderbird-115.11.0.processed-source.tar.xz
+SOURCES/thunderbird-langpacks-115.11.0-20240513.tar.xz
diff --git a/.thunderbird.metadata b/.thunderbird.metadata
index 5383b68..f8f3e31 100644
--- a/.thunderbird.metadata
+++ b/.thunderbird.metadata
@@ -2,5 +2,5 @@ b963b16f6879c5dbe6e33a3a3da058b494453922 SOURCES/cbindgen-vendor.tar.xz
 d744f92e874688cc4b5376477dfdd639a97a6cd4 SOURCES/nspr-4.35.0-1.el8_1.src.rpm
 39d1004f8948186cdaa33bbb90423f6f994bdf6c SOURCES/nss-3.90.0-2.el8_1.src.rpm
 df0dd588680f6ade6728a1fd3ff2d71e7a46255d SOURCES/nss-3.90.0-3.el9_0.src.rpm
-56522a0800e27a5ecee0212ad55d3768bf8a7e32 SOURCES/thunderbird-115.10.0.b2.processed-source.tar.xz
-09f9395ac550f9f6974ac2f3ac5d5635b7eeab16 SOURCES/thunderbird-langpacks-115.10.0-20240415.tar.xz
+b49c034c5add68d6ed21941260f81ff19de310f9 SOURCES/thunderbird-115.11.0.processed-source.tar.xz
+c7dd3c6b5bf0a940cf27e4f2cf39ba53c2156116 SOURCES/thunderbird-langpacks-115.11.0-20240513.tar.xz
diff --git a/SPECS/thunderbird.spec b/SPECS/thunderbird.spec
index e13b4f0..21c9647 100644
--- a/SPECS/thunderbird.spec
+++ b/SPECS/thunderbird.spec
@@ -35,7 +35,7 @@ function dist_to_rhel_minor(str, start)
   end
   match = string.match(str, ".el9")
   if match then
-     return 4
+     return 5
   end
   return -1
 end}
@@ -124,7 +124,7 @@ 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 .b2
 
 %bcond_without langpacks
 
@@ -134,8 +134,8 @@ end}
 
 Summary:        Mozilla Thunderbird mail/newsgroup client
 Name:           thunderbird
-Version:        115.10.0
-Release:        2%{?dist}
+Version:        115.11.0
+Release:        1%{?dist}
 URL:            http://www.mozilla.org/projects/thunderbird/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
 
@@ -165,7 +165,7 @@ ExcludeArch:    aarch64 s390 ppc ppc64
 #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}-20240415.tar.xz
+Source1:        thunderbird-langpacks-%{version}-20240513.tar.xz
 %endif
 Source2:        cbindgen-vendor.tar.xz
 Source3:        process-official-tarball
@@ -1514,6 +1514,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #===============================================================================
 
 %changelog
+* Mon May 13 2024 Eike Rathke <erack@redhat.com> - 115.11.0-1
+- Update to 115.11.0 build2
+
 * Mon Apr 15 2024 Eike Rathke <erack@redhat.com> - 115.10.0-2
 - Update to 115.10.0 build2