diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 2327f5b..5d63911 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -11,7 +11,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ['3.10', '3.11', '3.12']
+        python-version: ['3.10', '3.11', '3.12', '3.13']
 
     steps:
     - uses: actions/checkout@v2
diff --git a/conftest.py b/conftest.py
index 3cf9d22..dcbc835 100644
--- a/conftest.py
+++ b/conftest.py
@@ -1,13 +1,48 @@
+# type: ignore
+import re
+import doctest
+
 collect_ignore = ['setup.py']
 
 pytest_plugins = ("pytest_cov", "subtests")
 
 
+OutputChecker = doctest.OutputChecker
+
+
+numpy2_float64_pattern = r'np\.float64\((?P<num>inf|[+-]?\d*\.\d+)\)'
+
+def ensure_numpy_1_style_repr(repr_: str)-> str:
+    return re.sub(
+                numpy2_float64_pattern,
+                lambda m: m['num'],
+                repr_,
+                )
+
+
+class Numpy1Numpy2AgnosticOutputChecker(doctest.OutputChecker):
+
+    def check_output(self, want, got, optionflags):
+
+        numpy_1_style_want = ensure_numpy_1_style_repr(want)
+        numpy_1_style_got = ensure_numpy_1_style_repr(got)
+
+        return super().check_output(numpy_1_style_want, numpy_1_style_got, optionflags)
+
+
+
+
 def pytest_configure(config):
     import sys
     sys._called_from_test = True
+    doctest.OutputChecker = Numpy1Numpy2AgnosticOutputChecker
+
 
 
 def pytest_unconfigure(config):
     import sys
     del sys._called_from_test
+    doctest.OutputChecker = OutputChecker
+
+
+
diff --git a/pyproject.toml b/pyproject.toml
index 84e10e7..e9d2c0b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -59,7 +59,7 @@ docs = [
 ]
 test = [
   "array-api-strict",
-  "numpy<2", # NumPy 2 changes array repr, affecting doctests.
+  "numpy", 
   "pytest",
   "pytest-cov",
   "pytest-subtests",
@@ -78,4 +78,4 @@ build-backend = "setuptools.build_meta"
 include = ["dcor*"]
 
 [tool.setuptools.dynamic]
-version = {attr = "dcor.__version__"}
\ No newline at end of file
+version = {attr = "dcor.__version__"}