diff --git a/data/requirements.txt b/data/requirements.txt
index 023fa870d..feb9e2cc7 100644
--- a/data/requirements.txt
+++ b/data/requirements.txt
@@ -1,4 +1,4 @@
 numpy
 pyqt5
 psutil
-cython<3.0.0
+cython
diff --git a/setup.py b/setup.py
index ac76efcba..3672550e1 100644
--- a/setup.py
+++ b/setup.py
@@ -133,7 +133,7 @@ def read_long_description():
         return ""
 
 
-install_requires = ["numpy", "psutil", "cython<3.0.0"]
+install_requires = ["numpy", "psutil", "cython"]
 if IS_RELEASE:
     install_requires.append("pyqt5")
 else:
diff --git a/src/urh/dev/native/lib/sdrplay.pyx b/src/urh/dev/native/lib/sdrplay.pyx
index b979eed98..5d1016d69 100644
--- a/src/urh/dev/native/lib/sdrplay.pyx
+++ b/src/urh/dev/native/lib/sdrplay.pyx
@@ -47,10 +47,10 @@ cdef void __rx_stream_callback(short *xi, short *xq, unsigned int firstSampleNum
         PyGILState_Release(gstate)
         free(data)
 
-cdef void _rx_stream_callback(short *xi, short *xq, unsigned int firstSampleNum, int grChanged, int rfChanged, int fsChanged, unsigned int numSamples, unsigned int reset, unsigned int hwRemoved, void *cbContext):
+cdef void _rx_stream_callback(short *xi, short *xq, unsigned int firstSampleNum, int grChanged, int rfChanged, int fsChanged, unsigned int numSamples, unsigned int reset, unsigned int hwRemoved, void *cbContext) noexcept:
     __rx_stream_callback(xi, xq, firstSampleNum, grChanged, rfChanged, fsChanged, numSamples, reset, cbContext)
 
-cdef void _gain_change_callback(unsigned int gRdB, unsigned int lnaGRdB, void *cbContext):
+cdef void _gain_change_callback(unsigned int gRdB, unsigned int lnaGRdB, void *cbContext) noexcept:
     return
 
 cpdef void set_gr_mode_for_dev_model(int dev_model):