diff --git a/SHA256SUMS.sources b/SHA256SUMS.sources
index 9df1f969..b022cbe5 100644
--- a/SHA256SUMS.sources
+++ b/SHA256SUMS.sources
@@ -4,6 +4,7 @@ f0611136bee505811e9ca11ca7ac188ef5323a8e2ef19cffd3edb3cf08fd791e  autoconf-2.13.
 6b217a064c6d06603d50a3ad05129aef9435367810c10894210b8dad965d2306  autoconf-2.53.tar.bz2
 a74aea954f36c7beeb6cc47b96a408c3e04e7ad635f614e65250dbcd8ec0bd28  autoconf-2.54.tar.bz2
 f757158a04889b265203eecd8ca92568e2a67c3b9062fa6bff7a0a6efd2244ac  autoconf-2.55.tar.bz2
+e1035aa2c21fae2a934d1ab56c774ce9d22717881dab8a1a5b16d294fb793489  autoconf-2.57.tar.bz2
 503cdc2b0992a4309545d17f462cb15f99bb57b7161dfc4082b2e7188f2bcc0f  automake-1.4-p6.tar.gz
 0dbafacaf21e135cab35d357a14bdcd981d2f2d00e1387801be8091a31b7bb81  automake-1.6.3.tar.bz2
 2dddc3b51506e702647ccc6757e15c05323fa67245d2d53e81ed36a832f9be42  automake-1.7.8.tar.bz2
diff --git a/parts.rst b/parts.rst
index 4898d221..a67588ad 100644
--- a/parts.rst
+++ b/parts.rst
@@ -473,6 +473,12 @@ automake 1.7.8
 
 Newer ``automake``. This is the latest ``automake`` that is buildable with ``autoconf-2.55``.
 
+autoconf 2.57
+=============
+
+Newer ``autoconf``. This time we were able to skip version 2.56.
+
+
 bash 3.2.57
 ===========
 
diff --git a/rootfs.sh b/rootfs.sh
index 72b55dde..81fa07f2 100755
--- a/rootfs.sh
+++ b/rootfs.sh
@@ -240,6 +240,9 @@ get_file https://ftp.gnu.org/gnu/autoconf/autoconf-2.55.tar.bz2
 # automake 1.7.8
 get_file https://ftp.gnu.org/gnu/automake/automake-1.7.8.tar.bz2
 
+# autoconf 2.57
+get_file https://ftp.gnu.org/gnu/autoconf/autoconf-2.57.tar.bz2
+
 # bash 3.2.57
 get_file https://ftp.gnu.org/gnu/bash/bash-3.2.57.tar.gz
 
diff --git a/sysa/autoconf-2.57/autoconf-2.57.sh b/sysa/autoconf-2.57/autoconf-2.57.sh
new file mode 100755
index 00000000..d9272570
--- /dev/null
+++ b/sysa/autoconf-2.57/autoconf-2.57.sh
@@ -0,0 +1,22 @@
+# SPDX-FileCopyrightText: 2021 Andrius Štikonas <andrius@stikonas.eu>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+src_prepare() {
+    autoreconf-2.55 -f
+
+    # Install autoconf data files into versioned directory
+    for file in */*/Makefile.in */Makefile.in Makefile.in; do
+        sed -i '/^pkgdatadir/s:$:-@VERSION@:' $file
+    done
+}
+
+src_configure() {
+    ./configure --prefix="${PREFIX}" --program-suffix=-2.57
+}
+
+src_install() {
+    default_src_install
+
+    ln -sf "${PREFIX}/bin/autoconf-2.57" "${PREFIX}/bin/autoconf"
+}
diff --git a/sysa/run.sh b/sysa/run.sh
index 59411c74..24180237 100755
--- a/sysa/run.sh
+++ b/sysa/run.sh
@@ -115,6 +115,8 @@ build autoconf-2.55
 
 build automake-1.7.8
 
+build autoconf-2.57
+
 build bash-3.2.57
 
 exec bash run2.sh