diff --git a/.gitignore b/.gitignore
index 284d6cd..3e3afa5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -336,3 +336,5 @@
 /firefox-langpacks-115.10.0esr-20240409.tar.xz
 /firefox-115.11.0esr.processed-source.tar.xz
 /firefox-langpacks-115.11.0esr-20240507.tar.xz
+/firefox-115.12.0esr.processed-source.tar.xz
+/firefox-langpacks-115.12.0esr-20240604.tar.xz
diff --git a/firefox.spec b/firefox.spec
index a6a9598..b36dbdf 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -132,7 +132,7 @@ end}
 
 Summary:        Mozilla Firefox Web browser
 Name:           firefox
-Version:        115.11.0
+Version:        115.12.0
 Release:        1%{?dist}
 URL:            https://www.mozilla.org/firefox/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
@@ -163,7 +163,7 @@ ExcludeArch:    aarch64 s390 ppc
 # Link to original tarball: https://archive.mozilla.org/pub/firefox/releases/%%{version}%%{?pre_version}/source/firefox-%%{version}%%{?pre_version}.source.tar.xz
 Source0:        firefox-%{version}%{?pre_version}%{?buildnum}.processed-source.tar.xz
 %if %{with langpacks}
-Source1:        firefox-langpacks-%{version}%{?pre_version}-20240507.tar.xz
+Source1:        firefox-langpacks-%{version}%{?pre_version}-20240604.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 Jun 04 2024 Eike Rathke <erack@redhat.com> - 115.12.0-1
+- Update to 115.12.0 build1
+
 * Tue May 07 2024 Eike Rathke <erack@redhat.com> - 115.11.0-1
 - Update to 115.11.0 build1
 
diff --git a/sources b/sources
index 8f6b317..7ae9007 100644
--- a/sources
+++ b/sources
@@ -3,5 +3,5 @@ SHA512 (cbindgen-vendor.tar.xz) = 161811f4adfc74e5d92871c78139704d32e1e1ad6b615c
 SHA512 (nss-3.90.0-3.el8_1.src.rpm) = 81df24bd4eda4935888170e994834f4510c20fa51079631527b195b723d8f536ec4144d4a2e5d45768aeec7c426d50d70d0a294577d18233acc07c49c8af5130
 SHA512 (mochitest-python.tar.gz) = 089b1593068b76f4572af0086eaccf52a6a1299bfffb58593206d19bf021ae381f2380bbfeb4371586cd53706ff6dde3d240238b2caf19b96c57dfc2f4524e36
 SHA512 (nss-3.90.0-3.el9_0.src.rpm) = f321b9c1bda0b09eee564e2903023435851a4ff2e55bdd5b03012ca51be7999b18d85061f874065d0b25913721eb574f49746a3111f8f1cdd5b21268dddd8367
-SHA512 (firefox-115.11.0esr.processed-source.tar.xz) = d8e75f8b1e31decd5d006ba67c58bfd372591da178710121ba69cb2421535d3bc031bd95e7683b532136842ca55e8483820233fb3d838ca66b68f9b0f72935e4
-SHA512 (firefox-langpacks-115.11.0esr-20240507.tar.xz) = 6cef9f0fca243a92c48526c428ece67659fd86ed5458bfc7ad26a529743b60ca559fe88cbf5462a1c717b766abff75b293a63aaaa445c692563b6eecf779da3b
+SHA512 (firefox-115.12.0esr.processed-source.tar.xz) = 243a839539dc8a2ca3f2c3ec5603895687c3ea27b65f5ba17ca915905e38720964ad0767b958b2c9747c21aa7791a7941a76b38d7276b6bc78a39c54261ec0fe
+SHA512 (firefox-langpacks-115.12.0esr-20240604.tar.xz) = 896897cd8769cb4f9c87d53244132033226badf92128b64537ac4861de45bfda2697ac802613bf321f7a464cba0183aaf52cd06293934467eda8add598886b52