diff --git a/pyproject.toml b/pyproject.toml
index 1c5eb443..851bef49 100755
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "ssm-simulators"
-version = "0.12.0b1"
+version = "0.12.0b2"
 description = "SSMS is a package collecting simulators and training data generators for cognitive science, neuroscience, and approximate bayesian computation"
 authors = [
     { name = "Alexander Fengler", email = "alexander_fengler@brown.edu" },
diff --git a/src/cssm/_utils.pxd b/src/cssm/_utils.pxd
index cf07dba1..576be680 100644
--- a/src/cssm/_utils.pxd
+++ b/src/cssm/_utils.pxd
@@ -4,12 +4,12 @@
 cimport numpy as np
 
 # Random number generation functions (updated to NumPy-based implementations)
-cdef set_seed(random_state)
-cdef float random_uniform()
-cdef float random_exponential()
-cdef float[:] draw_random_stable(int n, float alpha)
-cdef float[:] draw_gaussian(int n)
+cpdef void set_seed(random_state)
+cpdef float random_uniform()
+cpdef float random_exponential()
+cpdef float[:] draw_random_stable(int n, float alpha)
+cpdef float[:] draw_gaussian(int n)
 
 # Helper functions
-cdef int sign(float x)
-cdef float csum(float[:] x)
+cpdef int sign(float x)
+cpdef float csum(float[:] x)