diff --git a/.github/workflows/ci_workflows.yml b/.github/workflows/ci_workflows.yml
index 5e6f481..217682f 100644
--- a/.github/workflows/ci_workflows.yml
+++ b/.github/workflows/ci_workflows.yml
@@ -77,8 +77,8 @@ jobs:
 
           - name: Test with dev dependencies
             os: ubuntu-latest
-            python: '3.12'
-            toxenv: py312-test-devdeps
+            python: '3.13-dev'
+            toxenv: py313-test-devdeps
 
           - name: Test with old dependencies
             os: ubuntu-20.04
diff --git a/.github/workflows/publish-to-pypi.yml b/.github/workflows/publish-to-pypi.yml
index a03bcb3..0d178fc 100644
--- a/.github/workflows/publish-to-pypi.yml
+++ b/.github/workflows/publish-to-pypi.yml
@@ -36,7 +36,7 @@ jobs:
     - name: Build wheels
       uses: pypa/cibuildwheel@v2.20.0
       env:
-        CIBW_BUILD: 'cp39-* cp310-* cp311-* cp312-*'
+        CIBW_BUILD: 'cp310-* cp311-* cp312-* cp313-*'
         CIBW_SKIP: '*-musllinux_*'
         CIBW_ARCHS_LINUX: 'x86_64'
         CIBW_ARCHS_WINDOWS: 'AMD64'
diff --git a/docs/synphot/filter_par.rst b/docs/synphot/filter_par.rst
index 0736916..c4732b3 100644
--- a/docs/synphot/filter_par.rst
+++ b/docs/synphot/filter_par.rst
@@ -46,17 +46,8 @@ By default, 10 FFT parameters are returned as complex numbers::
     <Quantity 0.66748047 Angstrom>
     >>> tr_max  # Peak value of throughput  # doctest: +FLOAT_CMP
     <Quantity 0.241445>
-    >>> fft_pars  # FFT parameters  # doctest: +FLOAT_CMP
-    [(407.5180314841658+7.494005416219807e-16j),
-     (-78.52240189503877-376.53990235136575j),
-     (-294.86589196496584+127.25464850352665j),
-     (130.20273803287864+190.84263652863257j),
-     (96.62299079012317-91.70087676328245j),
-     (-32.572468348727654-34.227696019221035j),
-     (-8.051741476066471-21.354793540998294j),
-     (-51.708676896903725+6.883836090870033j),
-     (13.08719675518801+54.48177212720124j),
-     (38.635087381362396-13.02803811279449j)]
+    >>> fft_pars  # FFT parameters  # doctest: +ELLIPSIS
+    [(407.51803...), (-78.52240...), ...]
 
 It is up to you to decide how to store this data, though storing it in a
 table format is recommended. In fact, if you have many filters to parameterize,
@@ -66,13 +57,13 @@ will store the results in a table for you::
     >>> from synphot.filter_parameterization import filters_to_fft_table
     >>> mapping = {'HST/ACS/HRC/F555W': (bp, None)}
     >>> filter_pars_table = filters_to_fft_table(mapping)
-    >>> filter_pars_table  # doctest: +FLOAT_CMP +ELLIPSIS
+    >>> filter_pars_table  # doctest: +ELLIPSIS
     <Table length=1>
-          filter      n_lambda ...                  fft_9
+          filter      n_lambda ...
                                ...
-          str17        int...  ...                complex128
-    ----------------- -------- ... ---------------------------------------
-    HST/ACS/HRC/F555W    10000 ... (38.635087381362396-13.02803811279449j)
+          str17        int...  ... 
+    ----------------- -------- ...
+    HST/ACS/HRC/F555W    10000 ... (38.635...-13.028...j)
     >>> filter_pars_table.write('my_filter_pars.fits')  # doctest: +SKIP
 
 .. _filter_fft_construction:
diff --git a/pyproject.toml b/pyproject.toml
index 99bc34c..aeb0028 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
 requires = ["setuptools>=30.3.0",
             "setuptools_scm",
-            "numpy>=2.0.0rc1"]
+            "numpy>=2.0.0"]
 build-backend = "setuptools.build_meta"
diff --git a/setup.cfg b/setup.cfg
index 0d7d3a1..9da08f3 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,11 +1,11 @@
 [tool:pytest]
-minversion = 6
+minversion = 7
 testpaths = "synphot" "docs"
 norecursedirs = build docs/_build synphot/src
 astropy_header = true
 doctest_plus = enabled
 doctest_subpackage_requires =
-    docs/synphot/filter_par.rst = numpy<2
+    docs/synphot/filter_par.rst = numpy>=2
 text_file_format = rst
 addopts = --doctest-rst --import-mode=append
 xfail_strict = true
diff --git a/tox.ini b/tox.ini
index bb0c795..d1032d5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{310,311,312}-test{,-alldeps,-oldestdeps,-devdeps,-predeps}{,-cov}
+    py{310,311,312,313}-test{,-alldeps,-oldestdeps,-devdeps,-predeps}{,-cov}
     codestyle
     twine
     bandit