diff --git a/libcaca.changes b/libcaca.changes
index 1f6fa42..7969d7c 100644
--- a/libcaca.changes
+++ b/libcaca.changes
@@ -1,16 +1,18 @@
 -------------------------------------------------------------------
 Sun Jun  5 00:57:03 UTC 2022 - Dirk Müller <dmueller@suse.com>
 
-- update to 0.99.beta20:
-  * IPv6 support in cacaserver
-  * fixed a bug from 2004 that caused PDF documentation generation to fail
-  * memory allocation functions are now more robust
-  * numerous fixes for memory leaks and invalid memory accesses 
-- drop bsc1184751-add-space-for-NUL-byte.patch,
-  Bug1120502-add_cast_to_prevent_overflow.patch,
-  Bug1143286_libcaca_configure_ac_chg_for_lto.patch,
-  libcaca-bsc1182731-prevent-overflow.patch,
-  libcaca-variable-type.patch: obsolete
+- Updated to 0.99.beta20.
+  * Added dependency BuildRequires:autoconf >= 2.71.
+  * Removed obsolete patches:
+    * libcaca-variable-type.patch
+    * Bug1120502-add_cast_to_prevent_overflow.patch
+    * Bug1143286_libcaca_configure_ac_chg_for_lto.patch
+    * libcaca-bsc1182731-prevent-overflow.patch
+    * bsc1184751-add-space-for-NUL-byte.patch
+  * Added IPv6 support in cacaserver.
+  * Fixed a bug from 2004 that caused PDF documentation generation to fail.
+  * Fixed memory allocation functions are now more robust.
+  * Fixed numerous fixes for memory leaks and invalid memory accesses. 
 
 -------------------------------------------------------------------
 Mon Mar 14 13:36:16 UTC 2022 - Josef Möllers <josef.moellers@suse.com>
diff --git a/libcaca.spec b/libcaca.spec
index 500c2f8..8b876ec 100644
--- a/libcaca.spec
+++ b/libcaca.spec
@@ -34,6 +34,7 @@ Patch9:         caca-no-build-date.patch
 Patch10:        libcaca-ncurses6.patch
 # PATCH-FIX-UPSTREAM correctly-handle-zero-width-or-height-images.patch bsc#1197028
 Patch100:       bsc1197028-correctly-handle-zero-width-or-height-images.patch
+BuildRequires:  autoconf >= 2.71
 BuildRequires:  doxygen
 BuildRequires:  fdupes
 BuildRequires:  freeglut-devel