diff --git a/repo_helper.yml b/repo_helper.yml
index cdd2ef5..c58a892 100644
--- a/repo_helper.yml
+++ b/repo_helper.yml
@@ -69,6 +69,7 @@ keywords:
 
 tox_unmanaged:
  - pytest
+ - testenv:py313
 
 extra_sphinx_extensions:
  - sphinx_toolbox.tweaks.footnote_symbols
diff --git a/tox.ini b/tox.ini
index 95160e6..ccc5401 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,7 +5,6 @@
 #     * testenv
 #     * testenv:.package
 #     * testenv:py313-dev
-#     * testenv:py313
 #     * testenv:py312-dev
 #     * testenv:py312
 #     * testenv:docs
@@ -50,13 +49,6 @@ setenv =
     PYTHONDEVMODE=1
     PIP_DISABLE_PIP_VERSION_CHECK=1
 
-[testenv:py313]
-download = True
-setenv =
-    PYTHONDEVMODE=1
-    PIP_DISABLE_PIP_VERSION_CHECK=1
-    UNSAFE_PYO3_SKIP_VERSION_CHECK=1
-
 [testenv:py312]
 download = True
 setenv =
@@ -208,6 +200,16 @@ ignore = W002
 toplevel = pymassspec_plot
 package = pymassspec_plot
 
+[testenv:py313]
+download = True
+setenv =
+    PYTHONDEVMODE=1
+    PIP_DISABLE_PIP_VERSION_CHECK=1
+    UNSAFE_PYO3_SKIP_VERSION_CHECK=1
+deps =
+    -r{toxinidir}/tests/requirements.txt
+    netcdf4==1.6.5
+
 [pytest]
 addopts = --color yes --durations 25 --mpl
 timeout = 300