diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ca94dd5c91c7fdf91c86ed0deaf0b172775499b4..5a6bd12b4a21d2092841682f0e83a23af9dce829 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -23,7 +23,7 @@ doc:
         - export LC_ALL=$(locale -a | grep en_US)
         - export LANG=$(locale -a | grep en_US)
         - if [ -f requirements.txt ]; then pip3 install -r requirements.txt; fi
-        - pip3 install -e .[doc]
+        - pip install -e .[doc]
         - rm -Rf build
         - python3 setup.py build_sphinx
     artifacts:
diff --git a/requirements.txt b/requirements.txt
index 7f3709af0084854b4a0a1ebae5ac84c315cfe3fb..8f8d9eab717faaad5348771a1455b456afa24b02 100755
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 numpy==1.24.1
-scikit-learn>=1.2.1
+scikit-learn==1.2.1
 scipy
 cvxopt==1.3.0
 six