diff --git a/baselibs.conf b/baselibs.conf
index e5cbeec..58b5f55 100644
--- a/baselibs.conf
+++ b/baselibs.conf
@@ -1 +1 @@
-libsodium23
+libsodium26
diff --git a/libsodium-1.0.18.tar.gz b/libsodium-1.0.18.tar.gz
deleted file mode 100644
index a2ad4a6..0000000
--- a/libsodium-1.0.18.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:6f504490b342a4f8a4c4a02fc9b866cbef8622d5df4e5452b46be121e46636c1
-size 1919817
diff --git a/libsodium-1.0.18.tar.gz.sig b/libsodium-1.0.18.tar.gz.sig
deleted file mode 100644
index eed705b..0000000
Binary files a/libsodium-1.0.18.tar.gz.sig and /dev/null differ
diff --git a/libsodium-1.0.20.tar.gz b/libsodium-1.0.20.tar.gz
new file mode 100644
index 0000000..4047ce4
--- /dev/null
+++ b/libsodium-1.0.20.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ebb65ef6ca439333c2bb41a0c1990587288da07f6c7fd07cb3a18cc18d30ce19
+size 1925167
diff --git a/libsodium-1.0.20.tar.gz.sig b/libsodium-1.0.20.tar.gz.sig
new file mode 100644
index 0000000..7bda856
Binary files /dev/null and b/libsodium-1.0.20.tar.gz.sig differ
diff --git a/libsodium.changes b/libsodium.changes
index 1fa9b36..e1e870a 100644
--- a/libsodium.changes
+++ b/libsodium.changes
@@ -1,3 +1,13 @@
+-------------------------------------------------------------------
+Sat May 25 16:54:11 UTC 2024 - Andreas Stieger <andreas.stieger@gmx.de>
+
+_ update to 1.0.20:
+  * build system updates and portability fixes
+- includes changes from 1.0.19:
+  * New AEADs: AEGIS-128L and AEGIS-256
+  * The HKDF key derivation mechanism, required by many standard
+    protocols
+
 -------------------------------------------------------------------
 Mon Aug 26 14:44:21 UTC 2019 - Michel Normand <normand@linux.vnet.ibm.com>
 
diff --git a/libsodium.spec b/libsodium.spec
index ba244a6..edadf95 100644
--- a/libsodium.spec
+++ b/libsodium.spec
@@ -2,6 +2,7 @@
 # spec file for package libsodium
 #
 # Copyright (c) 2019 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2024 Andreas Stieger <Andreas.Stieger@gmx.de>
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -16,12 +17,10 @@
 #
 
 
-%define _lto_cflags %{nil}
-
-%define sover   23
+%define sover   26
 %define lname   %{name}%{sover}
 Name:           libsodium
-Version:        1.0.18
+Version:        1.0.20
 Release:        0
 Summary:        Portable NaCl-based crypto library
 License:        ISC
@@ -63,31 +62,29 @@ This package contains all necessary include files and libraries needed
 to compile and develop applications that use libsodium.
 
 %prep
-%setup -q
+%autosetup -p1
 
 %build
-# Do _NOT_ change CFLAGS
-# See https://github.com/jedisct1/libsodium/issues/604
 %configure \
   --disable-static \
   --disable-silent-rules
-make %{?_smp_mflags}
+%make_build
 
 %install
 %make_install
 find %{buildroot} -type f -name "*.la" -delete -print
 
 %check
-make %{?_smp_mflags} check
+%make_build check
 
-%post -n %{lname} -p /sbin/ldconfig
-%postun -n %{lname} -p /sbin/ldconfig
+%ldconfig_scriptlets -n %{lname}
 
 %files -n %{lname}
 %license LICENSE
 %{_libdir}/%{name}.so.%{sover}*
 
 %files devel
+%license LICENSE
 %doc AUTHORS ChangeLog README.markdown THANKS
 %{_includedir}/sodium.h
 %{_includedir}/sodium