diff --git a/.readthedocs.yml b/.readthedocs.yml
index 6e8fcc3efe..bfce9dcbe7 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -5,6 +5,11 @@
 # Required
 version: 2
 
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.8"
+
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
   configuration: docs/source/conf.py
diff --git a/fedot/core/operations/evaluation/evaluation_interfaces.py b/fedot/core/operations/evaluation/evaluation_interfaces.py
index c01f2e2880..7a4fcaed95 100644
--- a/fedot/core/operations/evaluation/evaluation_interfaces.py
+++ b/fedot/core/operations/evaluation/evaluation_interfaces.py
@@ -156,7 +156,6 @@ class SkLearnEvaluationStrategy(EvaluationStrategy):
                 - ``svr``-> SklearnSVR
                 - ``sgdr``-> SklearnSGD
                 - ``lgbmreg``-> LGBMRegressor
-                - ``catboostreg``-> CatBoostRegressor
                 - ``xgboost``-> XGBClassifier
                 - ``logit``-> SklearnLogReg
                 - ``bernb``-> SklearnBernoulliNB
@@ -165,7 +164,6 @@ class SkLearnEvaluationStrategy(EvaluationStrategy):
                 - ``rf``-> RandomForestClassifier
                 - ``mlp``-> MLPClassifier
                 - ``lgbm``-> LGBMClassifier
-                - ``catboost``-> CatBoostClassifier
                 - ``kmeans``-> SklearnKmeans
 
         params: hyperparameters to fit the operation with
diff --git a/fedot/core/operations/evaluation/operation_implementations/models/boostings_implementations.py b/fedot/core/operations/evaluation/operation_implementations/models/boostings_implementations.py
index e64a54246b..7e4032b9c7 100644
--- a/fedot/core/operations/evaluation/operation_implementations/models/boostings_implementations.py
+++ b/fedot/core/operations/evaluation/operation_implementations/models/boostings_implementations.py
@@ -13,7 +13,6 @@
 
 
 class FedotCatBoostImplementation(ModelImplementation):
-    """ Catboost - https://catboost.ai/en/docs/ """
     __operation_params = ['use_eval_set', 'n_jobs']
 
     def __init__(self, params: Optional[OperationParameters] = None):