diff --git a/include/pa_asio.h b/include/pa_asio.h
index a164a6a..9360ee0 100644
--- a/include/pa_asio.h
+++ b/include/pa_asio.h
@@ -100,6 +100,19 @@ PaError PaAsio_GetOutputChannelName( PaDeviceIndex device, int channelIndex,
         const char** channelName );
 
 
+/** Set the sample rate of an open paASIO stream.
+ 
+ @param stream The stream to operate on.
+ @param sampleRate The new sample rate. 
+
+ Note that this function may fail if the stream is alredy running and the 
+ ASIO driver does not support switching the sample rate of a running stream.
+
+ Returns paIncompatibleStreamHostApi if stream is not a paASIO stream.
+*/
+PaError PaAsio_SetStreamSampleRate( PaStream* stream, double sampleRate );
+
+
 #define paAsioUseChannelSelectors      (0x01)
 
 typedef struct PaAsioStreamInfo{