diff --git a/www/firefox-esr/Makefile b/www/firefox-esr/Makefile
index 9e4b5561fd17..3ad59771cd66 100644
--- a/www/firefox-esr/Makefile
+++ b/www/firefox-esr/Makefile
@@ -1,65 +1,64 @@
 PORTNAME=	firefox
-DISTVERSION=	140.2.0
-PORTREVISION=	2
+DISTVERSION=	140.3.0
 PORTEPOCH=	1
 CATEGORIES=	www wayland
 MASTER_SITES=	MOZILLA/${PORTNAME}/releases/${DISTVERSION}esr/source \
 		MOZILLA/${PORTNAME}/candidates/${DISTVERSION}esr-candidates/build1/source
 PKGNAMESUFFIX=	-esr
 DISTFILES=	${DISTNAME}esr.source${EXTRACT_SUFX}
 
 MAINTAINER=	gecko@FreeBSD.org
 COMMENT=	Web browser based on the browser portion of Mozilla
 WWW=		https://www.firefox.com/
 
 BUILD_DEPENDS=	nspr>=4.32:devel/nspr \
 		nss>=3.112:security/nss \
 		icu>=76.1,1:devel/icu \
 		libevent>=2.1.8:devel/libevent \
 		harfbuzz>=10.1.0:print/harfbuzz \
 		graphite2>=1.3.14:graphics/graphite2 \
 		png>=1.6.45:graphics/png \
 		dav1d>=1.0.0:multimedia/dav1d \
 		libvpx>=1.14.0:multimedia/libvpx \
 		${PYTHON_PKGNAMEPREFIX}sqlite3>0:databases/py-sqlite3@${PY_FLAVOR} \
 		v4l_compat>0:multimedia/v4l_compat \
 		autoconf2.13:devel/autoconf2.13 \
 		nasm:devel/nasm \
 		yasm:devel/yasm \
 		zip:archivers/zip \
 		${LOCALBASE}/share/wasi-sysroot/lib/wasm32-wasi/libc++abi.a:devel/wasi-libcxx${LLVM_VERSION} \
 		${LOCALBASE}/share/wasi-sysroot/lib/wasm32-wasi/libc.a:devel/wasi-libc@${LLVM_VERSION} \
 		wasi-compiler-rt${LLVM_VERSION}>0:devel/wasi-compiler-rt${LLVM_VERSION}
 
 USE_GECKO=	gecko
 CPE_PRODUCT=	${PORTNAME}_esr
 CONFLICTS_INSTALL=	firefox
 USE_MOZILLA=	-sqlite
 CFLAGS_powerpc64le=	-DSQLITE_BYTEORDER=1234
 CONFIGURE_ENV+=	BINDGEN_CFLAGS="-I${LOCALBASE}/include"
 
 USES=		tar:xz
 
 FIREFOX_ICON=		${MOZILLA}.png
 FIREFOX_ICON_SRC=	${PREFIX}/lib/${MOZILLA}/browser/chrome/icons/default/default48.png
 FIREFOX_DESKTOP=	${MOZSRC}/taskcluster/docker/${MOZILLA}-snap/${MOZILLA}.desktop
 MOZ_OPTIONS=	--enable-application=browser \
 		--enable-official-branding \
 		--with-wasi-sysroot=${LOCALBASE}/share/wasi-sysroot
 
 .include "${.CURDIR}/../../www/firefox/Makefile.options"
 
 post-extract:
 	@${SED} -e 's|@FIREFOX_ICON@|${FIREFOX_ICON:R}|;s|@MOZILLA@|${MOZILLA}|' \
 		<${FILESDIR}/firefox.desktop.in >${WRKDIR}/${MOZILLA_EXEC_NAME}.desktop
 
 post-patch:
 	@${REINPLACE_CMD} -e 's|%%LOCALBASE%%|${LOCALBASE}|g' \
 		${WRKSRC}/browser/app/nsBrowserApp.cpp
 
 post-install:
 	${INSTALL_DATA} ${WRKDIR}/${MOZILLA_EXEC_NAME}.desktop ${STAGEDIR}${PREFIX}/share/applications
 	${MKDIR} ${STAGEDIR}${PREFIX}/share/pixmaps
 	${LN} -sf ${FIREFOX_ICON_SRC} ${STAGEDIR}${PREFIX}/share/pixmaps/${FIREFOX_ICON}
 
 .include <bsd.port.mk>
diff --git a/www/firefox-esr/distinfo b/www/firefox-esr/distinfo
index 9b2d3f0fc244..6574baceeb1a 100644
--- a/www/firefox-esr/distinfo
+++ b/www/firefox-esr/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1754937436
-SHA256 (firefox-140.2.0esr.source.tar.xz) = 956dce675c3b706d563caf07ed3ca9af632ab830be710dfd4351da78a0a2ef55
-SIZE (firefox-140.2.0esr.source.tar.xz) = 631022940
+TIMESTAMP = 1757438037
+SHA256 (firefox-140.3.0esr.source.tar.xz) = efc6eb3c93756311bd2f9db3796c0bbee6e3f182975d857284168b3dec672316
+SIZE (firefox-140.3.0esr.source.tar.xz) = 645261332
diff --git a/www/firefox-esr/files/patch-bug1874059 b/www/firefox-esr/files/patch-bug1874059
deleted file mode 100644
index 3fa954ef9def..000000000000
--- a/www/firefox-esr/files/patch-bug1874059
+++ /dev/null
@@ -1,25 +0,0 @@
-commit 56c888446600991803fd92d668349101ad4bf160
-Author: Christoph Moench-Tegeder <cmt@burggraben.net>
-Date:   Tue Feb 6 22:51:27 2024 +0100
-
-    switch to -fvisibility flags
-    
-    this fixes linkage with llvm18 (which does not like the former
-    approach via the #pragma in gcc_hidden.h
-    
-    PR: 276746
-    Submitted by: dim@
-
-diff --git build/moz.configure/toolchain.configure build/moz.configure/toolchain.configure
-index d08b748db250..4696f69153f6 100644
---- build/moz.configure/toolchain.configure
-+++ build/moz.configure/toolchain.configure
-@@ -2186,7 +2186,7 @@ set_define("_LIBCPP_HIDE_FROM_ABI", libcxx_override_visibility.hide_from_abi)
- @depends(target, build_environment)
- def visibility_flags(target, env):
-     if target.os != "WINNT":
--        if target.kernel == "Darwin":
-+        if target.kernel == "Darwin" or target.kernel == "FreeBSD":
-             return ("-fvisibility=hidden", "-fvisibility-inlines-hidden")
-         return (
-             "-I%s/system_wrappers" % os.path.join(env.dist),
diff --git a/www/firefox-esr/files/patch-toolkit_xre_nsEmbedFunctions.cpp b/www/firefox-esr/files/patch-toolkit_xre_nsEmbedFunctions.cpp
deleted file mode 100644
index caac874012c9..000000000000
--- a/www/firefox-esr/files/patch-toolkit_xre_nsEmbedFunctions.cpp
+++ /dev/null
@@ -1,17 +0,0 @@
-diff --git toolkit/xre/nsEmbedFunctions.cpp toolkit/xre/nsEmbedFunctions.cpp
-index 9ce6af94637c..44165558f7ec 100644
---- toolkit/xre/nsEmbedFunctions.cpp
-+++ toolkit/xre/nsEmbedFunctions.cpp
-@@ -360,10 +360,12 @@ nsresult XRE_InitChildProcess(int aArgc, char* aArgv[],
-           static_cast<CrashReporter::ProcessId>(*crashHelperPidArg);
- #endif  // defined(XP_LINUX) && !defined(MOZ_WIDGET_ANDROID)
- 
-+#if !defined(XP_FREEBSD)
-       exceptionHandlerIsSet = CrashReporter::SetRemoteExceptionHandler(
-           std::move(*crashReporterArg), crashHelperPid);
-       MOZ_ASSERT(exceptionHandlerIsSet,
-                  "Should have been able to set remote exception handler");
-+#endif
- 
-       if (!exceptionHandlerIsSet) {
-         // Bug 684322 will add better visibility into this condition