diff --git a/.ci_support/run_docker_linux.sh b/.ci_support/run_docker_linux.sh
index 6f633e9..30324bb 100755
--- a/.ci_support/run_docker_linux.sh
+++ b/.ci_support/run_docker_linux.sh
@@ -3,7 +3,7 @@
 set -xe
 
 export SOURCE_DATE_EPOCH=1609455600
-pip install -r /io/doc/requirements.txt --break-system-packages
+aurman -S python-sphinx-renku-theme python-sphinx_rtd_theme --noconfirm --noedit
 
 cp -r /io/* /tmp
 cd /tmp
diff --git a/doc/application/plot_metamodel.py b/doc/application/plot_metamodel.py
index 8b91900..ce86e7a 100644
--- a/doc/application/plot_metamodel.py
+++ b/doc/application/plot_metamodel.py
@@ -214,11 +214,10 @@ def globalMetamodel(sample):
 
 projectFunction = ot.KarhunenLoeveProjection(resultKL)
 coefficientSample = projectFunction(outputFMUTestSample)
+predictions = metamodel(inputTestSample)
 
-validationKriging = ot.MetaModelValidation(
-    inputTestSample, coefficientSample, metamodel
-)
-Q2 = validationKriging.computePredictivityFactor()[0]
+validation = ot.MetaModelValidation(coefficientSample, predictions)
+Q2 = validation.computeR2Score()[0]
 print(Q2)
 
 # %%
diff --git a/doc/conf.py b/doc/conf.py
index c2f97a6..baa17f3 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -68,7 +68,7 @@
 templates_path = ["_templates"]
 
 # The suffix(es) of source filenames.
-source_suffix = [".rst"]
+source_suffix = {'.rst': 'restructuredtext'}
 
 # The master toctree document.
 master_doc = "index"