diff --git a/www/firefox-esr/Makefile b/www/firefox-esr/Makefile
index ee4011d5141c..89a26d5e4d07 100644
--- a/www/firefox-esr/Makefile
+++ b/www/firefox-esr/Makefile
@@ -1,62 +1,62 @@
 # Created by: Alan Eldridge <alane@FreeBSD.org>
 
 PORTNAME=	firefox
-DISTVERSION=	91.4.1
+DISTVERSION=	91.5.0
 PORTEPOCH=	1
 CATEGORIES=	www
 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
 
 BUILD_DEPENDS=	nspr>=4.32:devel/nspr \
 		nss>=3.68:security/nss \
 		icu>=67.1,1:devel/icu \
 		libevent>=2.1.8:devel/libevent \
 		harfbuzz>=2.8.1:print/harfbuzz \
 		graphite2>=1.3.14:graphics/graphite2 \
 		png>=1.6.37:graphics/png \
 		libvpx>=1.8.2:multimedia/libvpx \
 		${PYTHON_PKGNAMEPREFIX}sqlite3>0:databases/py-sqlite3@${PY_FLAVOR} \
 		v4l_compat>0:multimedia/v4l_compat \
 		autoconf-2.13:devel/autoconf213 \
 		nasm:devel/nasm \
 		yasm:devel/yasm \
 		zip:archivers/zip
 
 USE_GECKO=	gecko
 CPE_PRODUCT=	${PORTNAME}_esr
 CONFLICTS_INSTALL=	firefox
 USE_MOZILLA=	-sqlite
 CFLAGS_powerpc64le=	-DSQLITE_BYTEORDER=1234
 
 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
 
 .include "${.CURDIR}/../../www/firefox/Makefile.options"
 
 post-patch:
 	@${REINPLACE_CMD} -e 's/%u/%U/' -e '/X-MultipleArgs/d' \
 		-e '/^Icon/s/=.*/=${FIREFOX_ICON:R}/' \
 		${FIREFOX_DESKTOP}
 	@${REINPLACE_CMD} -e 's|%%LOCALBASE%%|${LOCALBASE}|g' \
 		${WRKSRC}/browser/app/nsBrowserApp.cpp
 
 pre-configure:
 	(cd ${WRKSRC} && ${LOCALBASE}/bin/autoconf-2.13)
 	(cd ${WRKSRC}/js/src/ && ${LOCALBASE}/bin/autoconf-2.13)
 
 post-install:
 	${INSTALL_DATA} ${FIREFOX_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 ab5c3031fc1e..49475234db73 100644
--- a/www/firefox-esr/distinfo
+++ b/www/firefox-esr/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1639658837
-SHA256 (firefox-91.4.1esr.source.tar.xz) = 75e98daf53c5aea19d711a625d5d5e6dfdc8335965d3a19567c62f9d2961fc75
-SIZE (firefox-91.4.1esr.source.tar.xz) = 378159528
+TIMESTAMP = 1641929589
+SHA256 (firefox-91.5.0esr.source.tar.xz) = f45cd9c96227e3e6eabe37962ce924b7a7ca86b6c191326c1bab18e082b4c813
+SIZE (firefox-91.5.0esr.source.tar.xz) = 381371300
diff --git a/www/firefox-esr/files/patch-bug1618914 b/www/firefox-esr/files/patch-bug1618914
deleted file mode 100644
index c52ac49018b2..000000000000
--- a/www/firefox-esr/files/patch-bug1618914
+++ /dev/null
@@ -1,50 +0,0 @@
-From cea8e6a01bb03bbe565c9bf5dd4f439f30ca953f Mon Sep 17 00:00:00 2001
-From: Jan Beich <jbeich@FreeBSD.org>
-Date: Fri, 28 Feb 2020 16:49:38 +0000
-Subject: Bug 1618914 - [Wayland] Fall back to ftruncate if posix_fallocate isn't supported by filesystem.
-
-diff --git widget/gtk/WaylandShmBuffer.cpp widget/gtk/WaylandShmBuffer.cpp
-index 42eeedd3429ac..2a5c23d287413 100644
---- widget/gtk/WaylandShmBuffer.cpp
-+++ widget/gtk/WaylandShmBuffer.cpp
-@@ -67,36 +67,37 @@ static int WaylandAllocateShmMemory(int aSize) {
-     return -1;
-   }
- 
-   int ret = 0;
- #ifdef HAVE_POSIX_FALLOCATE
-   do {
-     ret = posix_fallocate(fd, 0, aSize);
-   } while (ret == EINTR);
--  if (ret != 0) {
-+  if (ret == 0) {
-+    return fd;
-+  } else if (ret != ENODEV && ret != EINVAL && ret != EOPNOTSUPP) {
-     NS_WARNING(
-         nsPrintfCString("posix_fallocate() fails to allocate shm memory: %s",
-                         strerror(ret))
-             .get());
-     close(fd);
-     return -1;
-   }
--#else
-+#endif
-   do {
-     ret = ftruncate(fd, aSize);
-   } while (ret < 0 && errno == EINTR);
-   if (ret < 0) {
-     NS_WARNING(nsPrintfCString("ftruncate() fails to allocate shm memory: %s",
-                                strerror(ret))
-                    .get());
-     close(fd);
-     fd = -1;
-   }
--#endif
- 
-   return fd;
- }
- 
- /* static */
- RefPtr<WaylandShmPool> WaylandShmPool::Create(
-     const RefPtr<nsWaylandDisplay>& aWaylandDisplay, int aSize) {
-   RefPtr<WaylandShmPool> shmPool = new WaylandShmPool(aSize);