diff -up firefox-78.8.0/python/mozboot/mozboot/archlinux.py.D94538-autoconf2.diff firefox-78.8.0/python/mozboot/mozboot/archlinux.py
--- firefox-78.8.0/python/mozboot/mozboot/archlinux.py.D94538-autoconf2.diff	2021-02-25 13:53:04.963982705 +0100
+++ firefox-78.8.0/python/mozboot/mozboot/archlinux.py	2021-02-25 13:53:25.713053151 +0100
@@ -26,7 +26,6 @@ class ArchlinuxBootstrapper(
     '''Archlinux experimental bootstrapper.'''
 
     SYSTEM_PACKAGES = [
-        'autoconf2.13',
         'base-devel',
         'nodejs',
         'python2',
diff -up firefox-78.8.0/python/mozboot/mozboot/centosfedora.py.D94538-autoconf2.diff firefox-78.8.0/python/mozboot/mozboot/centosfedora.py
--- firefox-78.8.0/python/mozboot/mozboot/centosfedora.py.D94538-autoconf2.diff	2021-02-17 08:49:42.000000000 +0100
+++ firefox-78.8.0/python/mozboot/mozboot/centosfedora.py	2021-02-25 13:53:04.963982705 +0100
@@ -26,7 +26,6 @@ class CentOSFedoraBootstrapper(
         # For CentOS 7, later versions of nodejs come from nodesource
         # and include the npm package.
         self.packages = [
-            'autoconf213',
             'nodejs',
             'which',
         ]
diff -up firefox-78.8.0/python/mozboot/mozboot/debian.py.D94538-autoconf2.diff firefox-78.8.0/python/mozboot/mozboot/debian.py
--- firefox-78.8.0/python/mozboot/mozboot/debian.py.D94538-autoconf2.diff	2021-02-25 13:53:04.963982705 +0100
+++ firefox-78.8.0/python/mozboot/mozboot/debian.py	2021-02-25 13:53:42.874111415 +0100
@@ -32,7 +32,6 @@ class DebianBootstrapper(
     # These are common packages for all Debian-derived distros (such as
     # Ubuntu).
     COMMON_PACKAGES = [
-        'autoconf2.13',
         'build-essential',
         'nodejs',
         'python-setuptools',
diff -up firefox-78.8.0/python/mozboot/mozboot/freebsd.py.D94538-autoconf2.diff firefox-78.8.0/python/mozboot/mozboot/freebsd.py
--- firefox-78.8.0/python/mozboot/mozboot/freebsd.py.D94538-autoconf2.diff	2021-02-17 08:49:42.000000000 +0100
+++ firefox-78.8.0/python/mozboot/mozboot/freebsd.py	2021-02-25 13:53:04.963982705 +0100
@@ -15,7 +15,6 @@ class FreeBSDBootstrapper(BaseBootstrapp
         self.flavor = flavor.lower()
 
         self.packages = [
-            'autoconf213',
             'gmake',
             'gtar',
             'pkgconf',
diff -up firefox-78.8.0/python/mozboot/mozboot/gentoo.py.D94538-autoconf2.diff firefox-78.8.0/python/mozboot/mozboot/gentoo.py
--- firefox-78.8.0/python/mozboot/mozboot/gentoo.py.D94538-autoconf2.diff	2021-02-17 08:49:38.000000000 +0100
+++ firefox-78.8.0/python/mozboot/mozboot/gentoo.py	2021-02-25 13:53:04.963982705 +0100
@@ -36,7 +36,6 @@ class GentooBootstrapper(
     def ensure_system_packages(self):
         self.run_as_root(['emerge', '--noreplace', '--quiet',
                           'app-arch/zip',
-                          'sys-devel/autoconf:2.1'
                           ])
 
     def ensure_browser_packages(self, artifact_mode=False):
diff -up firefox-78.8.0/python/mozboot/mozboot/openbsd.py.D94538-autoconf2.diff firefox-78.8.0/python/mozboot/mozboot/openbsd.py
--- firefox-78.8.0/python/mozboot/mozboot/openbsd.py.D94538-autoconf2.diff	2021-02-17 08:49:15.000000000 +0100
+++ firefox-78.8.0/python/mozboot/mozboot/openbsd.py	2021-02-25 13:53:04.964982709 +0100
@@ -12,7 +12,6 @@ class OpenBSDBootstrapper(BaseBootstrapp
         BaseBootstrapper.__init__(self, **kwargs)
 
         self.packages = [
-            'autoconf-2.13',
             'gmake',
             'gtar',
             'rust',
diff -up firefox-78.8.0/python/mozboot/mozboot/opensuse.py.D94538-autoconf2.diff firefox-78.8.0/python/mozboot/mozboot/opensuse.py
--- firefox-78.8.0/python/mozboot/mozboot/opensuse.py.D94538-autoconf2.diff	2021-02-17 08:49:42.000000000 +0100
+++ firefox-78.8.0/python/mozboot/mozboot/opensuse.py	2021-02-25 13:53:04.964982709 +0100
@@ -13,7 +13,6 @@ class OpenSUSEBootstrapper(
     '''openSUSE experimental bootstrapper.'''
 
     SYSTEM_PACKAGES = [
-        'autoconf213',
         'nodejs',
         'npm',
         'which',
diff -up firefox-78.8.0/python/mozboot/mozboot/osx.py.D94538-autoconf2.diff firefox-78.8.0/python/mozboot/mozboot/osx.py
--- firefox-78.8.0/python/mozboot/mozboot/osx.py.D94538-autoconf2.diff	2021-02-25 13:53:04.964982709 +0100
+++ firefox-78.8.0/python/mozboot/mozboot/osx.py	2021-02-25 13:54:07.162193882 +0100
@@ -353,7 +353,6 @@ class OSXBootstrapper(BaseBootstrapper):
         # least on 10.8) and because the build system wants a version
         # newer than what Apple ships.
         packages = [
-            'autoconf@2.13',
             'git',
             'gnu-tar',
             'node',
@@ -428,7 +427,6 @@ class OSXBootstrapper(BaseBootstrapper):
             'python27',
             'python36',
             'py27-gnureadline',
-            'autoconf213',
             'gnutar',
             'watchman',
             'nodejs8'
diff -up firefox-78.8.0/python/mozboot/mozboot/solus.py.D94538-autoconf2.diff firefox-78.8.0/python/mozboot/mozboot/solus.py
--- firefox-78.8.0/python/mozboot/mozboot/solus.py.D94538-autoconf2.diff	2021-02-25 13:53:04.964982709 +0100
+++ firefox-78.8.0/python/mozboot/mozboot/solus.py	2021-02-25 13:53:32.090074802 +0100
@@ -23,7 +23,6 @@ class SolusBootstrapper(
     '''Solus experimental bootstrapper.'''
 
     SYSTEM_PACKAGES = [
-        'autoconf213',
         'nodejs',
         'python',
         'python3',
diff -up firefox-78.8.0/python/mozboot/mozboot/windows.py.D94538-autoconf2.diff firefox-78.8.0/python/mozboot/mozboot/windows.py
--- firefox-78.8.0/python/mozboot/mozboot/windows.py.D94538-autoconf2.diff	2021-02-17 08:49:34.000000000 +0100
+++ firefox-78.8.0/python/mozboot/mozboot/windows.py	2021-02-25 13:53:04.978982756 +0100
@@ -48,7 +48,6 @@ class WindowsBootstrapper(BaseBootstrapp
         'patch',
         'patchutils',
         'diffutils',
-        'autoconf2.13',
         'tar',
         'zip',
         'unzip',