diff --git a/.github/workflows/gh-ci.yaml b/.github/workflows/gh-ci.yaml
index d95b817..7d6d18e 100644
--- a/.github/workflows/gh-ci.yaml
+++ b/.github/workflows/gh-ci.yaml
@@ -30,13 +30,13 @@ jobs:
         fail-fast: false
         matrix:
           os: [macOS-latest, ubuntu-latest, windows-latest]
-          python-version: ["3.10", "3.11", "3.12"]
+          python-version: ["3.10", "3.11", "3.12", "3.13"]
           mdanalysis-version: ["latest", "develop"]
           # Manually exclude any combinations of the test matrix that can't be run 
           exclude:
             # The latest release of MDAnalysis only supports up to Python 3.11
             # so we exclude 3.12 from the test matrix (issue #20)
-            - python-version: "3.12"
+            - python-version: "3.13"
               mdanalysis-version: "latest"
 
     steps:
@@ -48,29 +48,24 @@ jobs:
         df -h
         ulimit -a
 
-    # More info on options: https://github.com/conda-incubator/setup-miniconda
-    - name: Install conda dependencies
-      uses: conda-incubator/setup-miniconda@v3
+    - name: setup_micromamba
+      uses: mamba-org/setup-micromamba@v2
       with:
-        python-version: ${{ matrix.python-version }}
         environment-file: devtools/conda-envs/test_env.yaml
-        add-pip-as-python-dependency: true
-
-        miniforge-variant: Mambaforge
-        use-mamba: true
-        channels: conda-forge, defaults
-
-        activate-environment: pathsimanalysis-test
-        auto-update-conda: true
-        auto-activate-base: false
-        show-channel-urls: true
+        environment-name: pathsimanalysis-test
+        create-args: >-
+          python=${{ matrix.python-version }}
+          pip
+        condarc: |
+          channels:
+            - conda-forge
 
     - name: Install MDAnalysis version
       uses: MDAnalysis/install-mdanalysis@main
       with:
         version: ${{ matrix.mdanalysis-version }}
         install-tests: true
-        installer:  mamba 
+        installer:  micromamba 
         shell: bash  -l {0} 
       
     - name: Install package
@@ -84,8 +79,8 @@ jobs:
         which pip
         pip list
 
-        conda info
-        conda list
+        micromamba info
+        micromamba list
 
     - name: Run tests
       run: |
diff --git a/pyproject.toml b/pyproject.toml
index 64abf24..0e078a4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,6 +25,7 @@ classifiers = [
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "Topic :: Scientific/Engineering",
     "Topic :: Software Development :: Libraries :: Python Modules",
 ]