diff --git a/.github/workflows/python-package-conda.yml b/.github/workflows/python-package-conda.yml
index e9abd31fa..3e7018ed6 100644
--- a/.github/workflows/python-package-conda.yml
+++ b/.github/workflows/python-package-conda.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
       max-parallel: 5
       matrix:
-        python-version: ["3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
 
     steps:
     - name: Checkout repository
diff --git a/environment.yml b/environment.yml
index f525235ff..f33e2b55c 100644
--- a/environment.yml
+++ b/environment.yml
@@ -5,7 +5,7 @@ dependencies:
     - pyflakes
     - numpy=2.2.1
     - cython=0.29 # 3.0.11 (segmentation fault)
-    - parmed
+    # - parmed # not available in python 3.13
     - pytest
     - mock
     - pytest