diff --git a/liquidsoap.spec b/liquidsoap.spec
index bd18ddd..8b1b6cd 100644
--- a/liquidsoap.spec
+++ b/liquidsoap.spec
@@ -1,6 +1,6 @@
 Name:          liquidsoap
 Version:       2.0.3
-Release:       1mamba
+Release:       2mamba
 Summary:       Audio toolkit for streaming, aiming at complex Internet radio systems
 Group:         Applications/Multimedia
 Vendor:        openmamba
@@ -23,6 +23,7 @@ BuildRequires: libavformat-ffmpeg-devel
 BuildRequires: libavutil-ffmpeg-devel
 BuildRequires: libcurl-devel
 BuildRequires: libfaad2-devel
+BuildRequires: libfdk-aac-devel
 BuildRequires: libffi-devel
 BuildRequires: libflac-devel
 BuildRequires: libgcc
@@ -72,6 +73,7 @@ BuildRequires: ocaml-duppy-devel
 BuildRequires: ocaml-camomile-devel
 BuildRequires: ocaml-cry-devel
 BuildRequires: ocaml-faad-devel
+BuildRequires: ocaml-fdkaac-devel
 BuildRequires: ocaml-ffmpeg-devel
 BuildRequires: ocaml-flac-devel
 BuildRequires: ocaml-inotify-devel
@@ -98,6 +100,7 @@ BuildRequires: ocaml-voaacenc-devel
 BuildRequires: ocaml-vorbis-devel
 BuildRequires: ocaml-xmlm-devel
 BuildRequires: ocaml-xmlplaylist-devel
+BuildRequires: ocaml-yojson-devel
 # note: festival provides text2wave
 BuildRequires: festival
 #BuildRequires: python-devel
@@ -338,6 +341,9 @@ fi
 #%doc doc/html
 
 %changelog
+* Sun Feb 13 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 2.0.3-2mamba
+- added support for ocaml-yojson and ocaml-fdkaac
+
 * Sat Feb 12 2022 Automatic Build System <autodist@mambasoft.it> 2.0.3-1mamba
 - automatic version update by autodist