diff --git a/baselibs.conf b/baselibs.conf
new file mode 100644
index 0000000..bf86ead
--- /dev/null
+++ b/baselibs.conf
@@ -0,0 +1 @@
+librav1e0
diff --git a/rav1e.changes b/rav1e.changes
index 066bf43..212acda 100644
--- a/rav1e.changes
+++ b/rav1e.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon Jul 20 10:08:32 UTC 2020 - Dominique Leuenberger <dimstar@opensuse.org>
+
+- Add baselibs.conf: produce librav1e0-32bit, as needed by
+  ffmpeg-4, as this newly builds against rav1e.
+
 -------------------------------------------------------------------
 Sun Jun  7 12:36:57 UTC 2020 - Andreas Schneider <asn@cryptomilk.org>
 
diff --git a/rav1e.spec b/rav1e.spec
index 366e807..a5fdc25 100644
--- a/rav1e.spec
+++ b/rav1e.spec
@@ -28,6 +28,7 @@ URL:            https://github.com/xiph/rav1e
 #
 Source0:        https://github.com/xiph/rav1e/archive/v%{version}/%{name}-%{version}.tar.gz
 Source1:        vendor.tar.xz
+Source99:       baselibs.conf
 #
 BuildRequires:  cargo-c
 BuildRequires:  nasm