diff --git a/baselibs.conf b/baselibs.conf
new file mode 100644
index 0000000..d638dca
--- /dev/null
+++ b/baselibs.conf
@@ -0,0 +1 @@
+libavif10
diff --git a/libavif.changes b/libavif.changes
index de59c3c..f5291c9 100644
--- a/libavif.changes
+++ b/libavif.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Apr 13 06:20:37 UTC 2021 - Dominique Leuenberger <dimstar@opensuse.org>
+
+- Add baselibs.conf: produce libavif10-32bit as a new dependency to
+  libgd3-32bit (support avif in libgd).
+
 -------------------------------------------------------------------
 Mon Mar 15 10:40:45 UTC 2021 - Andreas Schneider <asn@cryptomilk.org>
 
diff --git a/libavif.spec b/libavif.spec
index f4e0ea2..1c3ea1f 100644
--- a/libavif.spec
+++ b/libavif.spec
@@ -29,6 +29,7 @@ Group:          Development/Libraries/C and C++
 URL:            https://github.com/AOMediaCodec/libavif
 #
 Source:         https://github.com/AOMediaCodec/libavif/archive/v%{version}/%{name}-%{version}.tar.gz
+Source99:       baselibs.conf
 #
 BuildRequires:  cmake
 BuildRequires:  gcc-c++