diff --git a/SHA256SUMS.sources b/SHA256SUMS.sources
index 25a3264..457e93a 100644
--- a/SHA256SUMS.sources
+++ b/SHA256SUMS.sources
@@ -9,6 +9,7 @@ f0cde70a8f135098a6a3e85869f2e1cc3f141beea766fa3d6636e086cd8b90a7  autoconf-2.59.
 93a2ceab963618b021db153f0c881a2de82455c1dc7422be436fcd5c554085a1  autoconf-2.61.tar.bz2
 db11944057f3faf229ff5d6ce3fcd819f565455c152b72cec17ebc1cbb80136b  autoconf-2.65.tar.bz2
 64ebcec9f8ac5b2487125a86a7760d2591ac9e1d3dbd59489633f9de62a57684  autoconf-2.69.tar.xz
+e8a6eb9d28ddcba8ffef3fa211653239e9bf239aba6a01a6b7cfc7ceaec69cbd  autoconf-archive-2021.02.19.tar.xz
 e98ab43bb839c31696a4202e5b6ff388b391659ef2387cf9365019fad17e1adc  automake-1.10.3.tar.bz2
 4f46d1f9380c8a3506280750f630e9fc915cb1a435b724be56b499d016368718  automake-1.11.2.tar.bz2
 af6ba39142220687c500f79b4aa2f181d9b24e4f8d8ec497cea4ba26c64bedaf  automake-1.15.1.tar.xz
diff --git a/parts.rst b/parts.rst
index 888e5b2..087c189 100644
--- a/parts.rst
+++ b/parts.rst
@@ -604,3 +604,9 @@ arbitrary-precision arithmetic, operating on signed integers, rational numbers,
 and floating-point numbers.
 
 GMP is required by newer versions of GCC and Guile.
+
+autoconf-archive 2021.02.19
+===========================
+
+The GNU Autoconf Archive is a collection of Autoconf macros that are used by
+various projects.
diff --git a/sysa.py b/sysa.py
index d054107..e540118 100755
--- a/sysa.py
+++ b/sysa.py
@@ -432,3 +432,6 @@ class SysA:
 
         # gmp 6.2.1
         self.get_file("https://mirrors.kernel.org/gnu/gmp/gmp-6.2.1.tar.xz")
+
+        # autoconf archive 2021.02.19
+        self.get_file("https://mirrors.kernel.org/gnu/autoconf-archive/autoconf-archive-2021.02.19.tar.xz")
diff --git a/sysa/autoconf-archive-2021.02.19/autoconf-archive-2021.02.19.sh b/sysa/autoconf-archive-2021.02.19/autoconf-archive-2021.02.19.sh
new file mode 100755
index 0000000..d1d03aa
--- /dev/null
+++ b/sysa/autoconf-archive-2021.02.19/autoconf-archive-2021.02.19.sh
@@ -0,0 +1,19 @@
+# SPDX-FileCopyrightText: 2021 Andrius Štikonas <andrius@stikonas.eu>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+src_prepare() {
+    autoreconf-2.69 -fi
+}
+
+src_configure() {
+    ./configure --prefix="${PREFIX}"
+}
+
+src_compile() {
+    make MAKEINFO=true DESTDIR="${DESTDIR}"
+}
+
+src_install() {
+    make MAKEINFO=true DESTDIR="${DESTDIR}" install
+}
diff --git a/sysa/run2.sh b/sysa/run2.sh
index 762d0e9..9f15409 100755
--- a/sysa/run2.sh
+++ b/sysa/run2.sh
@@ -22,6 +22,8 @@ build tar-1.34
 
 build gmp-6.2.1
 
+build autoconf-archive-2021.02.19
+
 echo "Bootstrapping completed."
 
 exec env - PATH=/after/bin PS1="\w # " bash -i