diff --git a/firefox-mozconfig b/firefox-mozconfig
index 676a0e0..cac0e76 100644
--- a/firefox-mozconfig
+++ b/firefox-mozconfig
@@ -16,6 +16,7 @@ ac_add_options --enable-js-shell
 ac_add_options --with-unsigned-addon-scopes=app,system
 ac_add_options --without-sysroot
 ac_add_options --without-wasm-sandboxed-libraries
+ac_add_options --enable-replace-malloc
 
 export BUILD_OFFICIAL=1
 export MOZILLA_OFFICIAL=1
diff --git a/firefox.spec b/firefox.spec
index 52e220d..802c0f7 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -174,7 +174,7 @@ ExcludeArch: i686
 Summary:        Mozilla Firefox Web browser
 Name:           firefox
 Version:        122.0
-Release:        3%{?pre_tag}%{?dist}
+Release:        4%{?pre_tag}%{?dist}
 URL:            https://www.mozilla.org/firefox/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
 Source0:        https://archive.mozilla.org/pub/firefox/releases/%{version}%{?pre_version}/source/firefox-%{version}%{?pre_version}.source.tar.xz
@@ -1177,6 +1177,9 @@ fi
 #---------------------------------------------------------------------
 
 %changelog
+* Tue Jan 30 2024 Martin Stransky <stransky@redhat.com>- 122.0-4
+- Build with --enable-replace-malloc (rhbz#2260766)
+
 * Tue Jan 30 2024 Martin Stransky <stransky@redhat.com>- 122.0-3
 - Added version to obsolete firefox-wayland/x11