diff --git a/.gitignore b/.gitignore
index b9d0233..8e5b802 100644
--- a/.gitignore
+++ b/.gitignore
@@ -555,3 +555,5 @@ firefox-3.6.4.source.tar.bz2
 /firefox-langpacks-108.0.2-20230112.tar.xz
 /firefox-109.0.source.tar.xz
 /firefox-langpacks-109.0-20230111.tar.xz
+/firefox-109.0.1.source.tar.xz
+/firefox-langpacks-109.0.1-20230201.tar.xz
diff --git a/firefox.spec b/firefox.spec
index fc61f0d..69bd9e3 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -172,13 +172,13 @@ ExcludeArch: i686
 
 Summary:        Mozilla Firefox Web browser
 Name:           firefox
-Version:        109.0
-Release:        4%{?pre_tag}%{?dist}
+Version:        109.0.1
+Release:        1%{?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
 %if %{with langpacks}
-Source1:        firefox-langpacks-%{version}%{?pre_version}-20230111.tar.xz
+Source1:        firefox-langpacks-%{version}%{?pre_version}-20230201.tar.xz
 %endif
 Source2:        cbindgen-vendor.tar.xz
 Source10:       firefox-mozconfig
@@ -251,6 +251,7 @@ Patch408:        mozilla-1663844.patch
 Patch415:        mozilla-1670333.patch
 Patch416:        D164651.diff
 Patch417:        D166324.diff
+Patch418:        mozilla-1813500.patch
 
 # PGO/LTO patches
 Patch600:        pgo.patch
@@ -527,6 +528,7 @@ This package contains results of tests executed during build.
 %patch415 -p1 -b .1670333
 %patch416 -p1 -b .D164651
 %patch417 -p1 -b .D166324
+%patch418 -p1 -b .1813500
 
 # PGO patches
 %if %{build_with_pgo}
@@ -1080,6 +1082,10 @@ fi
 #---------------------------------------------------------------------
 
 %changelog
+* Wed Feb 1 2023 Martin Stransky <stransky@redhat.com>- 109.0.1-1
+- Updated to 109.0.1
+- Added fix for rhbz#2147344 / mzbz#1813500.
+
 * Thu Jan 19 2023 Martin Stransky <stransky@redhat.com>- 109.0-4
 - Removed mozbz#1809162
 
diff --git a/mozilla-1813500.patch b/mozilla-1813500.patch
new file mode 100644
index 0000000..565d27d
--- /dev/null
+++ b/mozilla-1813500.patch
@@ -0,0 +1,94 @@
+changeset:   651243:ff57728124c6
+tag:         tip
+parent:      651233:dd0fdd1daa69
+user:        stransky <stransky@redhat.com>
+date:        Tue Jan 31 15:53:38 2023 +0100
+files:       widget/gtk/GfxInfo.cpp
+description:
+Bug 1813500 [Linux] Don't hang Firefox when glxtest process hangs r?emilio,rmader
+
+Differential Revision: https://phabricator.services.mozilla.com/D168385
+
+
+diff --git a/widget/gtk/GfxInfo.cpp b/widget/gtk/GfxInfo.cpp
+--- a/widget/gtk/GfxInfo.cpp
++++ b/widget/gtk/GfxInfo.cpp
+@@ -11,6 +11,7 @@
+ #include <errno.h>
+ #include <unistd.h>
+ #include <string>
++#include <poll.h>
+ #include <sys/types.h>
+ #include <sys/utsname.h>
+ #include <sys/wait.h>
+@@ -29,6 +30,9 @@
+ #include "WidgetUtilsGtk.h"
+ #include "MediaCodecsSupport.h"
+ 
++// How long we wait for data from glxtest process in milliseconds.
++#define GLXTEST_TIMEOUT 4000
++
+ #define EXIT_STATUS_BUFFER_TOO_SMALL 2
+ #ifdef DEBUG
+ bool fire_glxtest_process();
+@@ -99,12 +103,28 @@ void GfxInfo::GetData() {
+   // information in a separate process to protect against bad drivers.
+ 
+   // if glxtest_pipe == -1, that means that we already read the information
+-  if (glxtest_pipe == -1) return;
++  if (glxtest_pipe == -1) {
++    return;
++  }
++
++  const TimeStamp deadline =
++      TimeStamp::Now() + TimeDuration::FromMilliseconds(GLXTEST_TIMEOUT);
+ 
+   enum { buf_size = 2048 };
+   char buf[buf_size];
+-  ssize_t bytesread = read(glxtest_pipe, &buf,
+-                           buf_size - 1);  // -1 because we'll append a zero
++  ssize_t bytesread = 0;
++
++  struct pollfd pfd {};
++  pfd.fd = glxtest_pipe;
++  pfd.events = POLLIN;
++  auto ret = poll(&pfd, 1, GLXTEST_TIMEOUT);
++  if (ret <= 0) {
++    gfxCriticalNote << "glxtest: failed to read data from glxtest, we may "
++                       "fallback to software rendering\n";
++  } else {
++    // -1 because we'll append a zero
++    bytesread = read(glxtest_pipe, &buf, buf_size - 1);
++  }
+   close(glxtest_pipe);
+   glxtest_pipe = -1;
+ 
+@@ -129,9 +149,9 @@ void GfxInfo::GetData() {
+   int waitpid_errno = 0;
+   while (wait_for_glxtest_process) {
+     wait_for_glxtest_process = false;
+-    if (waitpid(glxtest_pid, &glxtest_status, 0) == -1) {
++    if (waitpid(glxtest_pid, &glxtest_status, WNOHANG) == -1) {
+       waitpid_errno = errno;
+-      if (waitpid_errno == EINTR) {
++      if (waitpid_errno == EAGAIN || waitpid_errno == EINTR) {
+         wait_for_glxtest_process = true;
+       } else {
+         // Bug 718629
+@@ -142,6 +162,15 @@ void GfxInfo::GetData() {
+         waiting_for_glxtest_process_failed = (waitpid_errno != ECHILD);
+       }
+     }
++    if (wait_for_glxtest_process) {
++      if (TimeStamp::Now() > deadline) {
++        gfxCriticalNote << "glxtest: glxtest process hangs\n";
++        waiting_for_glxtest_process_failed = true;
++        break;
++      }
++      // Wait 100ms to another waitpid() check.
++      usleep(100000);
++    }
+   }
+ 
+   int exit_code = EXIT_FAILURE;
+
diff --git a/sources b/sources
index fcf64d5..96ba157 100644
--- a/sources
+++ b/sources
@@ -2,3 +2,5 @@ SHA512 (cbindgen-vendor.tar.xz) = 0d45c1decfd7aaee853748745c9f5a907c0c6a0cf809c2
 SHA512 (mochitest-python.tar.gz) = e0a2c569dafe013b6a4c073516388549a8f398d8aa4538a3bc69dcda44737a3a3cf070285e9fa040a15d7a62446665c6158d42a1b6dc3e8d7f4680bc2ef17a16
 SHA512 (firefox-langpacks-109.0-20230111.tar.xz) = 8a07111d28ae40a4761ffec839b51cb391291befd45adc18bbd6e20ded1e89aedbe69ae54f47aaf354cdd70f92d22833cf254ec1405930c9cd6d785e9d5c0daf
 SHA512 (firefox-109.0.source.tar.xz) = 9e2b6e20353e414da3d2eb9dcd3d77757664a98a4438a8e84f19a1c7c203e40136b08bf96a458fac05ddc627347217d32f1f6337980c5ca918874993657a58e7
+SHA512 (firefox-109.0.1.source.tar.xz) = 58b21449a16a794152888f50e7fe9488c28739a7e067729acdc1de9f2e8384e6316cffdfe89f690f0d211189668d940825b4f8a26b8100468ae120772df99d72
+SHA512 (firefox-langpacks-109.0.1-20230201.tar.xz) = d8497c53466650d06db44382b6e8a1ac337205c820f67b9a635a7ecc7001eaa4b9391de3f7e88e2f3602510150c54e128723915366438c296f7e15e729f87fb2