diff --git a/.gitignore b/.gitignore
index 357fffd..5dc33e2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -320,3 +320,5 @@
 /firefox-115.4.0esr.processed-source.tar.xz
 /firefox-115.5.0esr.processed-source.tar.xz
 /firefox-langpacks-115.5.0esr-20231114.tar.xz
+/firefox-115.6.0esr.processed-source.tar.xz
+/firefox-langpacks-115.6.0esr-20231212.tar.xz
diff --git a/firefox.spec b/firefox.spec
index 539ddf6..e117ccf 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -132,7 +132,7 @@ end}
 
 Summary:        Mozilla Firefox Web browser
 Name:           firefox
-Version:        115.5.0
+Version:        115.6.0
 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}-20231114.tar.xz
+Source1:        firefox-langpacks-%{version}%{?pre_version}-20231212.tar.xz
 %endif
 Source2:        cbindgen-vendor.tar.xz
 Source3:        process-official-tarball
@@ -1739,6 +1739,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #---------------------------------------------------------------------
 
 %changelog
+* Tue Dec 12 2023 Eike Rathke <erack@redhat.com> - 115.6.0-1
+- Update to 115.6.0 build1
+
 * Tue Nov 14 2023 Eike Rathke <erack@redhat.com> - 115.5.0-1
 - Update to 115.5.0 build1
 
diff --git a/sources b/sources
index 4f761aa..1b8c2e5 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-115.5.0esr.processed-source.tar.xz) = 432e431e8608e2564945dbf20b7d748c611033437ca7da939a58e7af5a1c797e2d1813afa72723b850a169f7fe5d2039b93616d78139edebb6dc87c95fe52741
-SHA512 (firefox-langpacks-115.5.0esr-20231114.tar.xz) = 7eb91661aa4b073a8f34bdf2e18a75ab79a42bc488a69dbb4003b5830edddfe5ad344edbfdb7e83ad6ab90e7c8a8b2d534cbc5e7a78e7712cc224d2be041fd01
+SHA512 (firefox-115.6.0esr.processed-source.tar.xz) = 4e72fd41638cbc732d15199ce7d963ae4395ac92c4144815b114008dfef72efd7a6ac1bcbe14dde9a094e5641edf40fcc083658979f05a17a9f519d484130866
+SHA512 (firefox-langpacks-115.6.0esr-20231212.tar.xz) = 21a8079ffa5f0774edceae4536f2253133c797cbce6adc1a094f09b7f8b3be02d789a40fb95428f65249e8128f579d863b209fa9f646cfbc41949b7976bbe0fc