diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index b7d59ce..5a98caa 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -34,7 +34,7 @@ jobs:
 
       - name: Cythonize C-extensions
         run: |
-          python3 -m pip install --upgrade pip cython==0.29.*
+          python3 -m pip install --upgrade pip cython==3.0.*
           cythonize polyagamma/*.pyx
 
       - name: Build wheels
@@ -53,7 +53,7 @@ jobs:
       - name: Build source distribution
         if: ${{ matrix.os == 'ubuntu-20.04' }}
         run: |
-          python3 -m pip install --upgrade pip cython==0.29.* build
+          python3 -m pip install --upgrade pip cython==3.0.* build
           cythonize polyagamma/*.pyx
           python -m pip install build
           python -m build --sdist
diff --git a/polyagamma/_polyagamma.pyx b/polyagamma/_polyagamma.pyx
index 4b2a6f1..e266205 100644
--- a/polyagamma/_polyagamma.pyx
+++ b/polyagamma/_polyagamma.pyx
@@ -1,4 +1,3 @@
-# cython: language_level=3
 # cython: boundscheck=False
 # cython: wraparound=False
 # cython: nonecheck=False
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 54975ce..3ec7f7c 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,4 +1,4 @@
-cython==0.29.36
+cython==3.0.*
 numpy==1.26.0
 pre-commit==3.4.0
 pytest==7.4.0
diff --git a/setup.py b/setup.py
index fc1068e..a80c1ef 100644
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@
     "src/pgm_density.c",
 ]
 
-macros = [('NPY_NO_DEPRECATED_API', 0)]
+macros = [('NPY_NO_DEPRECATED_API', 'NPY_1_7_API_VERSION')]
 if os.getenv("BUILD_WITH_COVERAGE", None):
     macros.append(('CYTHON_TRACE_NOGIL', 1))