diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 8fd383c..37a73b6 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -24,23 +24,17 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python_version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
-        include:
-          - os: windows-2019
-            python_version: "3.6"
-          - os: ubuntu-20.04
-            python_version: "3.6"
+        python_version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
     runs-on: ${{ matrix.os }}
 
     steps:
       - name: Check out repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Configure Python version
         uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python_version }}
-          architecture: x64
 
       - name: Build sdist
         run: |
diff --git a/murmurhash/about.py b/murmurhash/about.py
index bcebbd5..3882cd9 100644
--- a/murmurhash/about.py
+++ b/murmurhash/about.py
@@ -1,5 +1,5 @@
 __title__ = "murmurhash"
-__version__ = "1.0.12"
+__version__ = "1.0.13"
 __summary__ = "Cython bindings for MurmurHash"
 __uri__ = "https://github.com/explosion/murmurhash"
 __author__ = "Explosion"
diff --git a/murmurhash/mrmr.pxd b/murmurhash/mrmr.pxd
index e675245..341228b 100644
--- a/murmurhash/mrmr.pxd
+++ b/murmurhash/mrmr.pxd
@@ -1,8 +1,8 @@
 from libc.stdint cimport uint64_t, int64_t, uint32_t
 
 
-cdef uint32_t hash32(void* key, int length, uint32_t seed) nogil
-cdef uint64_t hash64(void* key, int length, uint64_t seed) nogil
-cdef uint64_t real_hash64(void* key, int length, uint64_t seed) nogil
-cdef void hash128_x86(const void* key, int len, uint32_t seed, void* out) nogil
-cdef void hash128_x64(const void* key, int len, uint32_t seed, void* out) nogil
+cdef uint32_t hash32(void* key, int length, uint32_t seed) noexcept nogil
+cdef uint64_t hash64(void* key, int length, uint64_t seed) noexcept nogil
+cdef uint64_t real_hash64(void* key, int length, uint64_t seed) noexcept nogil
+cdef void hash128_x86(const void* key, int len, uint32_t seed, void* out) noexcept nogil
+cdef void hash128_x64(const void* key, int len, uint32_t seed, void* out) noexcept nogil
diff --git a/murmurhash/mrmr.pyx b/murmurhash/mrmr.pyx
index e7b9d7d..5d1cfb5 100644
--- a/murmurhash/mrmr.pyx
+++ b/murmurhash/mrmr.pyx
@@ -2,35 +2,35 @@ from libc.stdint cimport uint64_t, int64_t, int32_t
 
 
 cdef extern from "murmurhash/MurmurHash3.h":
-    void MurmurHash3_x86_32(void * key, uint64_t len, uint64_t seed, void* out) nogil
-    void MurmurHash3_x86_128(void * key, int len, uint32_t seed, void* out) nogil
-    void MurmurHash3_x64_128(void * key, int len, uint32_t seed, void* out) nogil
+    void MurmurHash3_x86_32(void * key, uint64_t len, uint64_t seed, void* out) noexcept nogil
+    void MurmurHash3_x86_128(void * key, int len, uint32_t seed, void* out) noexcept nogil
+    void MurmurHash3_x64_128(void * key, int len, uint32_t seed, void* out) noexcept nogil
 
 cdef extern from "murmurhash/MurmurHash2.h":
-    uint64_t MurmurHash64A(void * key, int length, uint32_t seed) nogil
-    uint64_t MurmurHash64B(void * key, int length, uint32_t seed) nogil
+    uint64_t MurmurHash64A(void * key, int length, uint32_t seed) noexcept nogil
+    uint64_t MurmurHash64B(void * key, int length, uint32_t seed) noexcept nogil
 
 
-cdef uint32_t hash32(void* key, int length, uint32_t seed) nogil:
+cdef uint32_t hash32(void* key, int length, uint32_t seed) noexcept nogil:
     cdef int32_t out
     MurmurHash3_x86_32(key, length, seed, &out)
     return out
 
 
-cdef uint64_t hash64(void* key, int length, uint64_t seed) nogil:
+cdef uint64_t hash64(void* key, int length, uint64_t seed) noexcept nogil:
     return MurmurHash64A(key, length, seed)
 
-cdef uint64_t real_hash64(void* key, int length, uint64_t seed) nogil:
+cdef uint64_t real_hash64(void* key, int length, uint64_t seed) noexcept nogil:
     cdef uint64_t[2] out
     MurmurHash3_x86_128(key, length, seed, &out)
     return out[1]
 
 
-cdef void hash128_x86(const void* key, int length, uint32_t seed, void* out) nogil:
+cdef void hash128_x86(const void* key, int length, uint32_t seed, void* out) noexcept nogil:
     MurmurHash3_x86_128(key, length, seed, out)
 
 
-cdef void hash128_x64(const void* key, int length, uint32_t seed, void* out) nogil:
+cdef void hash128_x64(const void* key, int length, uint32_t seed, void* out) noexcept nogil:
     MurmurHash3_x64_128(key, length, seed, out)
 
 
diff --git a/setup.py b/setup.py
index 21e5b4f..8cb59c2 100755
--- a/setup.py
+++ b/setup.py
@@ -114,7 +114,7 @@ def setup_package():
             url=about["__uri__"],
             license=about["__license__"],
             ext_modules=cythonize(ext_modules, language_level=2),
-            python_requires=">=3.6",
+            python_requires=">=3.6,<3.14",
             classifiers=[
                 "Development Status :: 5 - Production/Stable",
                 "Environment :: Console",