diff --git a/bindings/python/cggwave.pxd b/bindings/python/cggwave.pxd
index fcade25..2cb13ac 100644
--- a/bindings/python/cggwave.pxd
+++ b/bindings/python/cggwave.pxd
@@ -17,9 +17,11 @@ cdef extern from "ggwave.h" nogil:
         GGWAVE_TX_PROTOCOL_ULTRASOUND_FASTEST
 
     ctypedef struct ggwave_Parameters:
+        int payloadLength
         int sampleRateInp
         int sampleRateOut
         int samplesPerFrame
+        float soundMarkerThreshold
         ggwave_SampleFormat sampleFormatInp
         ggwave_SampleFormat sampleFormatOut