diff --git a/README.rst b/README.rst
index 05ebcec4..28c79b3f 100644
--- a/README.rst
+++ b/README.rst
@@ -87,7 +87,13 @@ for gstreamer: [optional]
         libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev
 
 for cam: [optional]
-        libevent-dev
+        libevent-dev libdrm-dev libsdl2-dev libsdl2-image-dev
+
+        If you would like to use KMS sink libdrm-dev is an optional dependancy,
+        if you would like to use SDL sink with pixel formats such as YUYV,
+        libsdl2-dev is an optional dependancy, if you would like to use SDL
+        sink with pixel formats such as MJPEG, libsdl2-image-dev is an
+        optional dependancy.
 
 for qcam: [optional]
         qtbase5-dev libqt5core5a libqt5gui5 libqt5widgets5 qttools5-dev-tools libtiff-dev