diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 5d11a4d..49d2ce7 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -24,7 +24,7 @@ jobs:
         uses: mamba-org/setup-micromamba@v1
         with:
           micromamba-version: '1.5.8-0'
-          environment-file: environment.yml
+          environment-file: build-environment.yml
           cache-environment: true
       - name: Build the JupyterLite site
         shell: bash -l {0}
diff --git a/.readthedocs.yml b/.readthedocs.yml
index 603fbe5..4e40562 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -3,10 +3,10 @@ version: 2
 build:
   os: "ubuntu-20.04"
   tools:
-    python: "mambaforge-4.10"
+    python: "miniconda-latest"
 
 conda:
-  environment: environment.yml
+  environment: build-environment.yml
 
 sphinx:
    configuration: conf.py
diff --git a/build-environment.yml b/build-environment.yml
new file mode 100644
index 0000000..c05c966
--- /dev/null
+++ b/build-environment.yml
@@ -0,0 +1,31 @@
+name: try-jupyter
+channels:
+- conda-forge
+dependencies:
+- python =3.12
+- mamba
+- pydata-sphinx-theme
+- sphinx <8.2
+- myst-parser
+- bqplot
+- ipycanvas >=0.9.1
+- ipyleaflet
+- ipympl >=0.8.2
+- ipywidgets >=8.1.1,<9
+- jupyterlab >=4.3.4,<=4.4
+- jupyterlab-language-pack-fr-FR
+- jupyterlab-language-pack-zh-CN
+- jupyterlab-fasta >=3.3.0,<4
+- jupyterlab-geojson >=3.4.0,<4
+- jupyterlab-tour
+- jupyterlab-night
+- jupyterlite-core =0.5.1
+- jupyterlite-pyodide-kernel =0.5.2
+- jupyterlite-sphinx >=0.19.1,<0.20
+- jupyterlite-xeus>=3.1.2
+- notebook >=7.3.2,<7.4
+- pip
+- plotly >=5,<6
+- pip:
+  - jupyterlite-xeus-sqlite==0.2.1
+  - jupyterlab-open-url-parameter >=0.3.0
diff --git a/environment.yml b/environment.yml
index d3a2b06..a77f9a0 100644
--- a/environment.yml
+++ b/environment.yml
@@ -1,29 +1,8 @@
-name: try-jupyter
+name: xeus-r-kernel
 channels:
-- conda-forge
+  - https://repo.mamba.pm/emscripten-forge
+  - conda-forge
 dependencies:
-- python =3.11
-- mamba
-- pydata-sphinx-theme
-- myst-parser
-- bqplot
-- ipycanvas >=0.9.1
-- ipyleaflet
-- ipympl >=0.8.2
-- ipywidgets >=8.1.1,<9
-- jupyterlab >=4.3.4,<=4.4
-- jupyterlab-language-pack-fr-FR
-- jupyterlab-language-pack-zh-CN
-- jupyterlab-fasta >=3.3.0,<4
-- jupyterlab-geojson >=3.4.0,<4
-- jupyterlab-tour
-- jupyterlab-night
-- jupyterlite-core =0.5.1
-- jupyterlite-pyodide-kernel =0.5.2
-- jupyterlite-sphinx >=0.18.0,<0.19
-- notebook >=7.3.2,<7.4
-- pip
-- plotly >=5,<6
-- pip:
-  - jupyterlite-xeus-sqlite==0.2.1
-  - jupyterlab-open-url-parameter >=0.3.0
+  - xeus-r >= 0.4.0
+  - r-coursekata
+  - r-colorspace