diff --git a/sklearn/cross_decomposition/_pls.py b/sklearn/cross_decomposition/_pls.py
index 72ee5d4af6ba6..125c5946b1562 100644
--- a/sklearn/cross_decomposition/_pls.py
+++ b/sklearn/cross_decomposition/_pls.py
@@ -530,6 +530,8 @@ class PLSRegression(_PLS):
 
     Read more in the :ref:`User Guide <cross_decomposition>`.
 
+    .. versionadded:: 0.8
+
     Parameters
     ----------
     n_components : int, (default 2)
@@ -668,6 +670,8 @@ class PLSCanonical(_PLS):
 
     Read more in the :ref:`User Guide <cross_decomposition>`.
 
+    .. versionadded:: 0.8
+
     Parameters
     ----------
     n_components : int, (default 2).
@@ -810,6 +814,8 @@ class PLSSVD(TransformerMixin, BaseEstimator):
 
     Read more in the :ref:`User Guide <cross_decomposition>`.
 
+    .. versionadded:: 0.8
+
     Parameters
     ----------
     n_components : int, default 2
diff --git a/sklearn/feature_extraction/image.py b/sklearn/feature_extraction/image.py
index 2cec6739e7f98..d0da784c526d7 100644
--- a/sklearn/feature_extraction/image.py
+++ b/sklearn/feature_extraction/image.py
@@ -298,6 +298,7 @@ def _extract_patches(arr, patch_shape=8, extraction_step=1):
     patches = as_strided(arr, shape=shape, strides=strides)
     return patches
 
+
 @deprecated("The function feature_extraction.image.extract_patches has been "
             "deprecated in 0.22 and will be removed in 0.24.")
 def extract_patches(arr, patch_shape=8, extraction_step=1):
@@ -483,6 +484,8 @@ class PatchExtractor(BaseEstimator):
 
     Read more in the :ref:`User Guide <image_feature_extraction>`.
 
+    .. versionadded:: 0.9
+
     Parameters
     ----------
     patch_size : tuple of ints (patch_height, patch_width)
diff --git a/sklearn/model_selection/_split.py b/sklearn/model_selection/_split.py
index 9a85b4049a3c3..bb0643e8c8edb 100644
--- a/sklearn/model_selection/_split.py
+++ b/sklearn/model_selection/_split.py
@@ -1816,6 +1816,8 @@ class PredefinedSplit(BaseCrossValidator):
 
     Read more in the :ref:`User Guide <cross_validation>`.
 
+    .. versionadded:: 0.16
+
     Parameters
     ----------
     test_fold : array-like, shape (n_samples,)
diff --git a/sklearn/pipeline.py b/sklearn/pipeline.py
index e4ac9007fe8e5..453ce2228d50d 100644
--- a/sklearn/pipeline.py
+++ b/sklearn/pipeline.py
@@ -47,6 +47,8 @@ class Pipeline(_BaseComposition):
 
     Read more in the :ref:`User Guide <pipeline>`.
 
+    .. versionadded:: 0.5
+
     Parameters
     ----------
     steps : list
diff --git a/sklearn/preprocessing/_data.py b/sklearn/preprocessing/_data.py
index cae75be2e591c..9227efa958b43 100644
--- a/sklearn/preprocessing/_data.py
+++ b/sklearn/preprocessing/_data.py
@@ -2679,6 +2679,8 @@ class PowerTransformer(TransformerMixin, BaseEstimator):
 
     Read more in the :ref:`User Guide <preprocessing_transformer>`.
 
+    .. versionadded:: 0.20
+
     Parameters
     ----------
     method : str, (default='yeo-johnson')