diff --git a/gst-libav.spec b/gst-libav.spec
index 8e5b06c..4431ef8 100644
--- a/gst-libav.spec
+++ b/gst-libav.spec
@@ -1,6 +1,6 @@
 %define        apiver  %(echo %version | cut -d. -f 1).0
 Name:          gst-libav
-Version:       1.18.4
+Version:       1.18.5
 Release:       1mamba
 Summary:       GStreamer plugins based on the libav project, including codecs
 Group:         System/Libraries
@@ -12,12 +12,13 @@ Source:        http://gstreamer.freedesktop.org/src/gst-libav/gst-libav-%{versio
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
-BuildRequires: libbzip2-devel
+BuildRequires: libavcodec-ffmpeg-devel
+BuildRequires: libavfilter-ffmpeg-devel
+BuildRequires: libavformat-ffmpeg-devel
+BuildRequires: libavutil-ffmpeg-devel
 BuildRequires: libglib-devel
 BuildRequires: libgst-plugins-base-devel
 BuildRequires: libgstreamer-devel
-BuildRequires: liborc-devel
-BuildRequires: libz-devel
 ## AUTOBUILDREQ-END
 
 %description
@@ -62,6 +63,9 @@ This package includes the %{name} API documentation.
 ##%doc ChangeLog NEWS README TODO
 
 %changelog
+* Thu Sep 09 2021 Automatic Build System <autodist@mambasoft.it> 1.18.5-1mamba
+- automatic version update by autodist
+
 * Tue Mar 16 2021 Automatic Build System <autodist@mambasoft.it> 1.18.4-1mamba
 - automatic version update by autodist