diff --git a/.github/workflows/build-with-clang.yml b/.github/workflows/build-with-clang.yml
index 43e7ab2..6163694 100644
--- a/.github/workflows/build-with-clang.yml
+++ b/.github/workflows/build-with-clang.yml
@@ -14,7 +14,7 @@ jobs:
 
     strategy:
       matrix:
-        python: ["3.10", "3.11", "3.12"]  # 3.9 fails - gh-issue#56
+        python: ["3.10", "3.11", "3.12", "3.13"]  # 3.9 fails - gh-issue#56
 
     env:
       ONEAPI_ROOT: /opt/intel/oneapi
diff --git a/.github/workflows/conda-package.yml b/.github/workflows/conda-package.yml
index f3dd02d..bb6a499 100644
--- a/.github/workflows/conda-package.yml
+++ b/.github/workflows/conda-package.yml
@@ -21,7 +21,7 @@ jobs:
 
     strategy:
       matrix:
-        python: ["3.9", "3.10", "3.11", "3.12"]
+        python: ['3.9', '3.10', '3.11', '3.12', '3.13']
 
     steps:
       - name: Cancel Previous Runs
@@ -78,7 +78,7 @@ jobs:
 
     strategy:
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12']
+        python: ['3.9', '3.10', '3.11', '3.12', '3.13']
     env:
       conda-bld: C:\Miniconda\conda-bld\win-64\
 
@@ -127,7 +127,7 @@ jobs:
 
     strategy:
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12']
+        python: ['3.9', '3.10', '3.11', '3.12', '3.13']
         experimental: [false]
         runner: [ubuntu-latest]
     continue-on-error: ${{ matrix.experimental }}
@@ -201,7 +201,7 @@ jobs:
 
     strategy:
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12']
+        python: ['3.9', '3.10', '3.11', '3.12', '3.13']
         experimental: [false]
         runner: [windows-2019]
     continue-on-error: ${{ matrix.experimental }}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f2b6840..1f2c9e6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,10 +1,18 @@
 `mkl-service` changelog
 =======================
 
+[dev] (MM/DD/YY)
+================
+
+Migrated from `setup.py` to `pyproject.toml`
+
+Added support for python 3.13
+
 2.3.0
 =====
 
 Fixed CI to actually execute tests. Populated CBWR constants to match MKL headers.
+
 Added tests checking that `cbwr_set` and `cbwr_get` round-trip.
 
 2.2.0
diff --git a/pyproject.toml b/pyproject.toml
index 5ec86b8..bbb4760 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,6 +43,7 @@ classifiers = [
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
   "Programming Language :: Python :: Implementation :: CPython",
   "Topic :: Software Development",
   "Topic :: Utilities",
@@ -57,7 +58,7 @@ keywords = ["MKL"]
 license = "BSD-3-Clause"
 name = "mkl-service"
 readme = {file = "README.md", content-type = "text/markdown"}
-requires-python = ">=3.9,<3.13"
+requires-python = ">=3.9,<3.14"
 
 [project.optional-dependencies]
 test = ["pytest"]