diff --git a/.gitignore b/.gitignore
index 552b22d..4234b20 100644
--- a/.gitignore
+++ b/.gitignore
@@ -401,3 +401,5 @@
 /firefox-140.5.0esr.processed-source.tar.xz
 /firefox-langpacks-140.5.0esr-20251106.tar.xz
 /firefox-langpacks-140.5.0esr-20251107.tar.xz
+/firefox-140.6.0esr.processed-source.tar.xz
+/firefox-langpacks-140.6.0esr-20251202.tar.xz
diff --git a/firefox.spec b/firefox.spec
index cf8703d..7e7dcd3 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -191,7 +191,7 @@ end}
 
 Summary:        Mozilla Firefox Web browser
 Name:           firefox
-Version:        140.5.0
+Version:        140.6.0
 Release:        1%{?dist}
 URL:            https://www.mozilla.org/firefox/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
@@ -222,7 +222,7 @@ 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}-20251107.tar.xz
+Source1:        firefox-langpacks-%{version}%{?pre_version}-20251202.tar.xz
 %endif
 Source2:        cbindgen-vendor.tar.xz
 Source3:        process-official-tarball
@@ -1756,8 +1756,11 @@ cp %{SOURCE36} .
   export PATH=%{_buildrootdir}/%{bundled_install_path}/bin:$PATH
   echo $PKG_CONFIG_PATH
 %endif
-
-./mach build -v 2>&1 || exit 1
+%ifarch s390x
+  setarch -R ./mach build -v 2>&1 || exit 1
+%else
+  ./mach build -v 2>&1 || exit 1
+%endif
 
 #---------------------------------------------------------------------
 %install
@@ -2128,6 +2131,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #---------------------------------------------------------------------
 
 %changelog
+* Tue Dec  2 2025 Jan Horak <jhorak@redhat.com> - 140.6.0-1
+- Update to 140.6.0 ESR
+
 * Fri Nov  7 2025 Jan Horak <jhorak@redhat.com> - 140.5.0-1
 - Update to 140.5.0 ESR
 
diff --git a/rpminspect.yaml b/rpminspect.yaml
index 6e92eef..93ede81 100644
--- a/rpminspect.yaml
+++ b/rpminspect.yaml
@@ -12,7 +12,8 @@ badfuncs:
 # We don't plan to build Firefox with the LTO because it brings more problems
 # than benefits to the package.
 annocheck:
-  - hardened: --ignore-unknown --verbose --skip-lto --skip-cf-protection --skip-property-note
+  jobs:
+    - hardened: --ignore-unknown --verbose --skip-lto --skip-cf-protection --skip-property-note
 runpath:
   # rpath to bundled content
   allowed_paths:
diff --git a/sources b/sources
index 537d3b3..b8e7d69 100644
--- a/sources
+++ b/sources
@@ -4,5 +4,5 @@ SHA512 (nss-3.112.0-1.el9_4.src.rpm) = 6386239e79f8095b05270b3c8b76ac9203b0df196
 SHA512 (nss-3.112.0-4.el8_2.src.rpm) = 59cca3df7a0ec6a731f4a36f8f560d496d240da0c16650f047ae686e683b883dc2630aedbe46a8b2cb21662c15f03f1efbe99da42055cc3a5418da4839e28da2
 SHA512 (nspr-4.36.0-2.el8_2.src.rpm) = fcc720afd2453a5110975fac9dd06f636491234780b62cbfcc235a485b4935e97c4f438292c686d27d9dc86b56f43399c024bee4fffcdff5f27c62d105310645
 SHA512 (cbindgen-vendor.tar.xz) = 79becf7e70bddbbebfd8c3eaf8c0003e29e267bfbcd64b9801ed2cfd35f5de9d04bb55afcf379f784b5a1e2b9b83c6b14eb6af6219ed5ccea1df29fc24e5614c
-SHA512 (firefox-140.5.0esr.processed-source.tar.xz) = a2f0020e095dc4fcb9439aa2504644965b4a4655debb939b1346417ebf1d22a7efcc7956050d55245ade5f15a62a50f1c54c3fb87b9009d59e6e2a59fe25d35b
-SHA512 (firefox-langpacks-140.5.0esr-20251107.tar.xz) = 1c6cd9a55d964a04820eb11d0da933f92bf3a9feb8c2b079cba07e6426b893e36870df4b031c03be934ec0f44852259e5fcad51e95e98f85f66f9403d1d06de7
+SHA512 (firefox-140.6.0esr.processed-source.tar.xz) = cd3d989576c8004364073e6110f520901db9007ad20149070fc72d14111d5071f0f310a7aeb6796b63ed6c498446100eaa47b523ad6e45b7921636ceb7fc0c51
+SHA512 (firefox-langpacks-140.6.0esr-20251202.tar.xz) = 354a24fbe2c98fa249c71bfeca63deb237655bcc9939f1383d055001459597908a50bf1b73eb573c1a584b9476ff9c4404b1ee025942970ba3e4a6cbef9ac32a