diff --git a/nixos/modules/services/development/jupyter/default.nix b/nixos/modules/services/development/jupyter/default.nix
index 6a5fd6b2940..21b84b3bcda 100644
--- a/nixos/modules/services/development/jupyter/default.nix
+++ b/nixos/modules/services/development/jupyter/default.nix
@@ -131,7 +131,7 @@ in {
             env = (pkgs.python3.withPackages (pythonPackages: with pythonPackages; [
                     ipykernel
                     pandas
-                    scikitlearn
+                    scikit-learn
                   ]));
           in {
             displayName = "Python 3 for machine learning";
diff --git a/nixos/modules/services/development/jupyterhub/default.nix b/nixos/modules/services/development/jupyterhub/default.nix
index f1dcab68b00..a1df4468cff 100644
--- a/nixos/modules/services/development/jupyterhub/default.nix
+++ b/nixos/modules/services/development/jupyterhub/default.nix
@@ -117,7 +117,7 @@ in {
             env = (pkgs.python3.withPackages (pythonPackages: with pythonPackages; [
                     ipykernel
                     pandas
-                    scikitlearn
+                    scikit-learn
                   ]));
           in {
             displayName = "Python 3 for machine learning";
diff --git a/pkgs/development/python-modules/batchgenerators/default.nix b/pkgs/development/python-modules/batchgenerators/default.nix
index 8706a31d571..336c6b2e513 100644
--- a/pkgs/development/python-modules/batchgenerators/default.nix
+++ b/pkgs/development/python-modules/batchgenerators/default.nix
@@ -8,7 +8,7 @@
 , numpy
 , pillow
 , scipy
-, scikitlearn
+, scikit-learn
 , scikitimage
 , threadpoolctl
 }:
@@ -28,7 +28,7 @@ buildPythonPackage rec {
   };
 
   propagatedBuildInputs = [
-    future numpy pillow scipy scikitlearn scikitimage threadpoolctl
+    future numpy pillow scipy scikit-learn scikitimage threadpoolctl
   ];
 
   checkInputs = [ pytestCheckHook unittest2 ];
diff --git a/pkgs/development/python-modules/bayesian-optimization/default.nix b/pkgs/development/python-modules/bayesian-optimization/default.nix
index c41181ca7b0..1e896d82678 100644
--- a/pkgs/development/python-modules/bayesian-optimization/default.nix
+++ b/pkgs/development/python-modules/bayesian-optimization/default.nix
@@ -2,7 +2,7 @@
 , buildPythonPackage
 , fetchFromGitHub
 , python
-, scikitlearn
+, scikit-learn
 , scipy
 , pytest
 , isPy27
@@ -21,7 +21,7 @@ buildPythonPackage rec {
   };
 
   propagatedBuildInputs = [
-    scikitlearn
+    scikit-learn
     scipy
   ];
 
diff --git a/pkgs/development/python-modules/cnvkit/default.nix b/pkgs/development/python-modules/cnvkit/default.nix
index 5baa28e4bd7..6347c8552bf 100644
--- a/pkgs/development/python-modules/cnvkit/default.nix
+++ b/pkgs/development/python-modules/cnvkit/default.nix
@@ -6,7 +6,7 @@
 , biopython
 , numpy
 , scipy
-, scikitlearn
+, scikit-learn
 , pandas
 , matplotlib
 , reportlab
@@ -42,7 +42,7 @@ buildPythonPackage rec {
     biopython
     numpy
     scipy
-    scikitlearn
+    scikit-learn
     pandas
     matplotlib
     reportlab
diff --git a/pkgs/development/python-modules/dask-glm/default.nix b/pkgs/development/python-modules/dask-glm/default.nix
index d091785db11..9072a691c20 100644
--- a/pkgs/development/python-modules/dask-glm/default.nix
+++ b/pkgs/development/python-modules/dask-glm/default.nix
@@ -7,7 +7,7 @@
 , multipledispatch
 , setuptools-scm
 , scipy
-, scikitlearn
+, scikit-learn
 , pytestCheckHook
 }:
 
@@ -22,7 +22,7 @@ buildPythonPackage rec {
 
   nativeBuildInputs = [ setuptools-scm ];
   checkInputs = [ pytestCheckHook ];
-  propagatedBuildInputs = [ cloudpickle dask numpy toolz multipledispatch scipy scikitlearn ];
+  propagatedBuildInputs = [ cloudpickle dask numpy toolz multipledispatch scipy scikit-learn ];
 
   meta = with lib; {
     homepage = "https://github.com/dask/dask-glm/";
diff --git a/pkgs/development/python-modules/dask-ml/default.nix b/pkgs/development/python-modules/dask-ml/default.nix
index b02c9a71a6b..ff1b145ee8a 100644
--- a/pkgs/development/python-modules/dask-ml/default.nix
+++ b/pkgs/development/python-modules/dask-ml/default.nix
@@ -6,7 +6,7 @@
 , numpy, toolz # dask[array]
 , numba
 , pandas
-, scikitlearn
+, scikit-learn
 , scipy
 , dask-glm
 , six
@@ -39,7 +39,7 @@ buildPythonPackage rec {
     numpy
     packaging
     pandas
-    scikitlearn
+    scikit-learn
     scipy
     six
     toolz
diff --git a/pkgs/development/python-modules/dftfit/default.nix b/pkgs/development/python-modules/dftfit/default.nix
index 73791bdaa9a..778b8c3d984 100644
--- a/pkgs/development/python-modules/dftfit/default.nix
+++ b/pkgs/development/python-modules/dftfit/default.nix
@@ -8,7 +8,7 @@
 , pandas
 , scipy
 , numpy
-, scikitlearn
+, scikit-learn
 , lammps-cython
 , pymatgen-lammps
 , pytestrunner
@@ -34,7 +34,7 @@ buildPythonPackage rec {
     pandas
     scipy
     numpy
-    scikitlearn
+    scikit-learn
     lammps-cython
     pymatgen-lammps
   ];
diff --git a/pkgs/development/python-modules/gensim/default.nix b/pkgs/development/python-modules/gensim/default.nix
index be6321f86ca..b6b6f42b3c3 100644
--- a/pkgs/development/python-modules/gensim/default.nix
+++ b/pkgs/development/python-modules/gensim/default.nix
@@ -5,7 +5,7 @@
 , six
 , scipy
 , smart_open
-, scikitlearn, testfixtures, unittest2
+, scikit-learn, testfixtures, unittest2
 , isPy3k
 }:
 
@@ -21,7 +21,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ smart_open numpy six scipy ];
 
-  checkInputs = [ scikitlearn testfixtures unittest2 ];
+  checkInputs = [ scikit-learn testfixtures unittest2 ];
 
   # Two tests fail.
   #
diff --git a/pkgs/development/python-modules/graspologic/default.nix b/pkgs/development/python-modules/graspologic/default.nix
index b4e8803784b..758f988a239 100644
--- a/pkgs/development/python-modules/graspologic/default.nix
+++ b/pkgs/development/python-modules/graspologic/default.nix
@@ -8,7 +8,7 @@
 , matplotlib
 , networkx
 , numpy
-, scikitlearn
+, scikit-learn
 , scipy
 , seaborn
 }:
@@ -31,7 +31,7 @@ buildPythonPackage rec {
     matplotlib
     networkx
     numpy
-    scikitlearn
+    scikit-learn
     scipy
     seaborn
   ];
diff --git a/pkgs/development/python-modules/hdbscan/default.nix b/pkgs/development/python-modules/hdbscan/default.nix
index d2590d14955..269062a1e71 100644
--- a/pkgs/development/python-modules/hdbscan/default.nix
+++ b/pkgs/development/python-modules/hdbscan/default.nix
@@ -5,7 +5,7 @@
 , numpy
 , pytestCheckHook
 , scipy
-, scikitlearn
+, scikit-learn
 , fetchPypi
 , joblib
 , six
@@ -29,7 +29,7 @@ buildPythonPackage rec {
   ];
 
   nativeBuildInputs = [ cython ];
-  propagatedBuildInputs = [ numpy scipy scikitlearn joblib six ];
+  propagatedBuildInputs = [ numpy scipy scikit-learn joblib six ];
   preCheck = ''
     cd hdbscan/tests
     rm __init__.py
diff --git a/pkgs/development/python-modules/hmmlearn/default.nix b/pkgs/development/python-modules/hmmlearn/default.nix
index 8d2afcf5e72..eb7e05afff7 100644
--- a/pkgs/development/python-modules/hmmlearn/default.nix
+++ b/pkgs/development/python-modules/hmmlearn/default.nix
@@ -1,4 +1,4 @@
-{ lib, fetchurl, buildPythonPackage, numpy, scikitlearn, setuptools_scm, cython, pytest }:
+{ lib, fetchurl, buildPythonPackage, numpy, scikit-learn, setuptools_scm, cython, pytest }:
 
 buildPythonPackage rec {
   pname = "hmmlearn";
@@ -10,7 +10,7 @@ buildPythonPackage rec {
   };
 
   buildInputs = [ setuptools_scm cython ];
-  propagatedBuildInputs = [ numpy scikitlearn ];
+  propagatedBuildInputs = [ numpy scikit-learn ];
   checkInputs = [ pytest ];
 
   checkPhase = ''
diff --git a/pkgs/development/python-modules/hyppo/default.nix b/pkgs/development/python-modules/hyppo/default.nix
index cc0b569d9b2..9fdeca082b2 100644
--- a/pkgs/development/python-modules/hyppo/default.nix
+++ b/pkgs/development/python-modules/hyppo/default.nix
@@ -4,7 +4,7 @@
 , fetchFromGitHub
 , pytestCheckHook , pytestcov , numba
 , numpy
-, scikitlearn
+, scikit-learn
 , scipy
 , matplotlib
 , seaborn
@@ -26,7 +26,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [
     numba
     numpy
-    scikitlearn
+    scikit-learn
     scipy
   ];
 
diff --git a/pkgs/development/python-modules/ignite/default.nix b/pkgs/development/python-modules/ignite/default.nix
index 71bed73f9d7..f745b735f34 100644
--- a/pkgs/development/python-modules/ignite/default.nix
+++ b/pkgs/development/python-modules/ignite/default.nix
@@ -8,7 +8,7 @@
 , mock
 , pytorch
 , pynvml
-, scikitlearn
+, scikit-learn
 , tqdm
 }:
 
@@ -24,7 +24,7 @@ buildPythonPackage rec {
   };
 
   checkInputs = [ pytestCheckHook matplotlib mock pytest_xdist ];
-  propagatedBuildInputs = [ pytorch scikitlearn tqdm pynvml ];
+  propagatedBuildInputs = [ pytorch scikit-learn tqdm pynvml ];
 
   # runs succesfully in 3.9, however, async isn't correctly closed so it will fail after test suite.
   doCheck = pythonOlder "3.9";
diff --git a/pkgs/development/python-modules/imbalanced-learn/0.4.nix b/pkgs/development/python-modules/imbalanced-learn/0.4.nix
index 96ba16b1cd1..6709092ca95 100644
--- a/pkgs/development/python-modules/imbalanced-learn/0.4.nix
+++ b/pkgs/development/python-modules/imbalanced-learn/0.4.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchPypi, scikitlearn, pandas, nose, pytest }:
+{ lib, buildPythonPackage, fetchPypi, scikit-learn, pandas, nose, pytest }:
 
 buildPythonPackage rec {
   pname = "imbalanced-learn";
@@ -9,7 +9,7 @@ buildPythonPackage rec {
     sha256 = "5bd9e86e40ce4001a57426541d7c79b18143cbd181e3330c1a3e5c5c43287083";
   };
 
-  propagatedBuildInputs = [ scikitlearn ];
+  propagatedBuildInputs = [ scikit-learn ];
   checkInputs = [ nose pytest pandas ];
   checkPhase = ''
     export HOME=$PWD
diff --git a/pkgs/development/python-modules/imbalanced-learn/default.nix b/pkgs/development/python-modules/imbalanced-learn/default.nix
index cf3fca9aa03..aad2e3e07a4 100644
--- a/pkgs/development/python-modules/imbalanced-learn/default.nix
+++ b/pkgs/development/python-modules/imbalanced-learn/default.nix
@@ -4,7 +4,7 @@
 , isPy27
 , pandas
 , pytestCheckHook
-, scikitlearn
+, scikit-learn
 }:
 
 buildPythonPackage rec {
@@ -17,7 +17,7 @@ buildPythonPackage rec {
     sha256 = "0a9xrw4qsh95g85pg2611hvj6xcfncw646si2icaz22haw1x410w";
   };
 
-  propagatedBuildInputs = [ scikitlearn ];
+  propagatedBuildInputs = [ scikit-learn ];
   checkInputs = [ pytestCheckHook pandas ];
   preCheck = ''
     export HOME=$TMPDIR
diff --git a/pkgs/development/python-modules/kmapper/default.nix b/pkgs/development/python-modules/kmapper/default.nix
index abba8354399..87f22172c49 100644
--- a/pkgs/development/python-modules/kmapper/default.nix
+++ b/pkgs/development/python-modules/kmapper/default.nix
@@ -1,7 +1,7 @@
 { lib
 , buildPythonPackage
 , fetchFromGitHub
-, scikitlearn
+, scikit-learn
 , numpy
 , scipy
 , jinja2
@@ -25,7 +25,7 @@ buildPythonPackage rec {
   };
 
   propagatedBuildInputs = [
-    scikitlearn
+    scikit-learn
     numpy
     scipy
     jinja2
diff --git a/pkgs/development/python-modules/librosa/default.nix b/pkgs/development/python-modules/librosa/default.nix
index ce8f2a73fa7..45f6bffd661 100644
--- a/pkgs/development/python-modules/librosa/default.nix
+++ b/pkgs/development/python-modules/librosa/default.nix
@@ -4,7 +4,7 @@
 , joblib
 , matplotlib
 , six
-, scikitlearn
+, scikit-learn
 , decorator
 , audioread
 , resampy
@@ -21,7 +21,7 @@ buildPythonPackage rec {
     sha256 = "af0b9f2ed4bbf6aecbc448a4cd27c16453c397cb6bef0f0cfba0e63afea2b839";
   };
 
-  propagatedBuildInputs = [ joblib matplotlib six scikitlearn decorator audioread resampy soundfile pooch ];
+  propagatedBuildInputs = [ joblib matplotlib six scikit-learn decorator audioread resampy soundfile pooch ];
 
   # No tests
   # 1. Internet connection is required
diff --git a/pkgs/development/python-modules/lightgbm/default.nix b/pkgs/development/python-modules/lightgbm/default.nix
index 1018ceaec4b..a887c3ec8af 100644
--- a/pkgs/development/python-modules/lightgbm/default.nix
+++ b/pkgs/development/python-modules/lightgbm/default.nix
@@ -4,7 +4,7 @@
 , cmake
 , numpy
 , scipy
-, scikitlearn
+, scikit-learn
 , llvmPackages ? null
 }:
 
@@ -39,7 +39,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [
     numpy
     scipy
-    scikitlearn
+    scikit-learn
   ];
 
   postConfigure = ''
diff --git a/pkgs/development/python-modules/mlrose/default.nix b/pkgs/development/python-modules/mlrose/default.nix
index b17b56b8f9e..2187f272680 100644
--- a/pkgs/development/python-modules/mlrose/default.nix
+++ b/pkgs/development/python-modules/mlrose/default.nix
@@ -3,7 +3,7 @@
 , buildPythonPackage
 , fetchFromGitHub
 , fetchpatch
-, scikitlearn
+, scikit-learn
 , pytestCheckHook
 , pytest-randomly
 }:
@@ -28,7 +28,7 @@ buildPythonPackage rec {
     })
   ];
 
-  propagatedBuildInputs = [ scikitlearn ];
+  propagatedBuildInputs = [ scikit-learn ];
   checkInputs = [ pytest-randomly pytestCheckHook ];
 
   postPatch = ''
diff --git a/pkgs/development/python-modules/mlxtend/default.nix b/pkgs/development/python-modules/mlxtend/default.nix
index 44402b36ec0..4692dc61c22 100644
--- a/pkgs/development/python-modules/mlxtend/default.nix
+++ b/pkgs/development/python-modules/mlxtend/default.nix
@@ -5,7 +5,7 @@
 , pytestCheckHook
 , scipy
 , numpy
-, scikitlearn
+, scikit-learn
 , pandas
 , matplotlib
 , joblib
@@ -33,7 +33,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [
     scipy
     numpy
-    scikitlearn
+    scikit-learn
     pandas
     matplotlib
     joblib
@@ -45,7 +45,7 @@ buildPythonPackage rec {
     license= licenses.bsd3;
     maintainers = with maintainers; [ evax ];
     platforms = platforms.unix;
-    # incompatible with nixpkgs scikitlearn version
+    # incompatible with nixpkgs scikit-learn version
     broken = true;
   };
 }
diff --git a/pkgs/development/python-modules/mne-python/default.nix b/pkgs/development/python-modules/mne-python/default.nix
index bed191c39e3..d8add2608b6 100644
--- a/pkgs/development/python-modules/mne-python/default.nix
+++ b/pkgs/development/python-modules/mne-python/default.nix
@@ -11,7 +11,7 @@
 , matplotlib
 , nibabel
 , pandas
-, scikitlearn
+, scikit-learn
 }:
 
 buildPythonPackage rec {
@@ -40,7 +40,7 @@ buildPythonPackage rec {
     matplotlib
     nibabel
     pandas
-    scikitlearn
+    scikit-learn
   ];
   preCheck = ''
     export HOME=$TMP
diff --git a/pkgs/development/python-modules/moviepy/default.nix b/pkgs/development/python-modules/moviepy/default.nix
index 4cd1fec3d8b..c3acdbe71ec 100644
--- a/pkgs/development/python-modules/moviepy/default.nix
+++ b/pkgs/development/python-modules/moviepy/default.nix
@@ -13,14 +13,14 @@
 , advancedProcessing ? false
 , opencv3 ? null
 , scikitimage ? null
-, scikitlearn ? null
+, scikit-learn ? null
 , scipy ? null
 , matplotlib ? null
 , youtube-dl ? null
 }:
 
 assert advancedProcessing -> (
-  opencv3 != null && scikitimage != null && scikitlearn != null
+  opencv3 != null && scikitimage != null && scikit-learn != null
   && scipy != null && matplotlib != null && youtube-dl != null);
 
 buildPythonPackage rec {
@@ -40,7 +40,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [
     numpy decorator imageio imageio-ffmpeg tqdm requests proglog
   ] ++ (lib.optionals advancedProcessing [
-    opencv3 scikitimage scikitlearn scipy matplotlib youtube-dl
+    opencv3 scikitimage scikit-learn scipy matplotlib youtube-dl
   ]);
 
   meta = with lib; {
diff --git a/pkgs/development/python-modules/nilearn/default.nix b/pkgs/development/python-modules/nilearn/default.nix
index e3ce770398e..39edd7e34da 100644
--- a/pkgs/development/python-modules/nilearn/default.nix
+++ b/pkgs/development/python-modules/nilearn/default.nix
@@ -1,5 +1,5 @@
 { lib, buildPythonPackage, fetchPypi, pytestCheckHook, matplotlib
-, nibabel, numpy, pandas, scikitlearn, scipy, joblib, requests }:
+, nibabel, numpy, pandas, scikit-learn, scipy, joblib, requests }:
 
 buildPythonPackage rec {
   pname = "nilearn";
@@ -20,7 +20,7 @@ buildPythonPackage rec {
     numpy
     pandas
     requests
-    scikitlearn
+    scikit-learn
     scipy
   ];
 
diff --git a/pkgs/development/python-modules/osmnx/default.nix b/pkgs/development/python-modules/osmnx/default.nix
index 3cd420c7491..a55d26d83c2 100755
--- a/pkgs/development/python-modules/osmnx/default.nix
+++ b/pkgs/development/python-modules/osmnx/default.nix
@@ -1,5 +1,5 @@
 { lib, buildPythonPackage, fetchFromGitHub, geopandas, descartes, matplotlib, networkx, numpy
-, pandas, requests, Rtree, shapely, folium, scikitlearn, scipy}:
+, pandas, requests, Rtree, shapely, folium, scikit-learn, scipy}:
 
 buildPythonPackage rec {
   pname = "osmnx";
@@ -12,7 +12,7 @@ buildPythonPackage rec {
     sha256 = "1k3y5kl4k93vxaxyanc040x44s2fyyc3m1ndy2j3kg0037z8ad4z";
   };
 
-  propagatedBuildInputs = [ geopandas descartes matplotlib networkx numpy pandas requests Rtree shapely folium scikitlearn scipy ];
+  propagatedBuildInputs = [ geopandas descartes matplotlib networkx numpy pandas requests Rtree shapely folium scikit-learn scipy ];
 
   # requires network
   doCheck = false;
diff --git a/pkgs/development/python-modules/persim/default.nix b/pkgs/development/python-modules/persim/default.nix
index 65f3529e60c..2868cea4aea 100644
--- a/pkgs/development/python-modules/persim/default.nix
+++ b/pkgs/development/python-modules/persim/default.nix
@@ -6,7 +6,7 @@
 , joblib
 , matplotlib
 , numpy
-, scikitlearn
+, scikit-learn
 , scipy
 , pytestCheckHook
 }:
@@ -26,7 +26,7 @@ buildPythonPackage rec {
     joblib
     matplotlib
     numpy
-    scikitlearn
+    scikit-learn
     scipy
   ];
 
diff --git a/pkgs/development/python-modules/ppscore/default.nix b/pkgs/development/python-modules/ppscore/default.nix
index ad3a393a00d..43dd1f249ed 100644
--- a/pkgs/development/python-modules/ppscore/default.nix
+++ b/pkgs/development/python-modules/ppscore/default.nix
@@ -3,7 +3,7 @@
 , fetchFromGitHub
 , isPy27
 , pandas
-, scikitlearn
+, scikit-learn
 , pytestCheckHook
 }:
 
@@ -23,7 +23,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [
     pandas
-    scikitlearn
+    scikit-learn
   ];
 
   meta = with lib; {
diff --git a/pkgs/development/python-modules/pygbm/default.nix b/pkgs/development/python-modules/pygbm/default.nix
index 0d2747c1cb4..5367f622e9b 100644
--- a/pkgs/development/python-modules/pygbm/default.nix
+++ b/pkgs/development/python-modules/pygbm/default.nix
@@ -4,7 +4,7 @@
 , scipy
 , numpy
 , numba
-, scikitlearn
+, scikit-learn
 , pytest
 , pythonOlder
 }:
@@ -25,7 +25,7 @@ buildPythonPackage rec {
     scipy
     numpy
     numba
-    scikitlearn
+    scikit-learn
   ];
 
   checkInputs = [
diff --git a/pkgs/development/python-modules/pynndescent/default.nix b/pkgs/development/python-modules/pynndescent/default.nix
index 8cddeb8873f..fa9db26b5e3 100644
--- a/pkgs/development/python-modules/pynndescent/default.nix
+++ b/pkgs/development/python-modules/pynndescent/default.nix
@@ -2,7 +2,7 @@
 , buildPythonPackage
 , fetchPypi
 , nose
-, scikitlearn
+, scikit-learn
 , scipy
 , numba
 , llvmlite
@@ -19,7 +19,7 @@ buildPythonPackage rec {
   };
 
   propagatedBuildInputs = [
-    scikitlearn
+    scikit-learn
     scipy
     numba
     llvmlite
diff --git a/pkgs/development/python-modules/pytorch-metric-learning/default.nix b/pkgs/development/python-modules/pytorch-metric-learning/default.nix
index fd2c80af890..e340d5eefad 100644
--- a/pkgs/development/python-modules/pytorch-metric-learning/default.nix
+++ b/pkgs/development/python-modules/pytorch-metric-learning/default.nix
@@ -3,7 +3,7 @@
 , fetchFromGitHub
 , isPy27
 , numpy
-, scikitlearn
+, scikit-learn
 , pytestCheckHook
 , pytorch
 , torchvision
@@ -26,7 +26,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [
     numpy
     pytorch
-    scikitlearn
+    scikit-learn
     torchvision
     tqdm
   ];
diff --git a/pkgs/development/python-modules/qiskit-aqua/default.nix b/pkgs/development/python-modules/qiskit-aqua/default.nix
index b1cdd7f523c..3233e435f07 100644
--- a/pkgs/development/python-modules/qiskit-aqua/default.nix
+++ b/pkgs/development/python-modules/qiskit-aqua/default.nix
@@ -14,7 +14,7 @@
 , qiskit-ignis
 , qiskit-terra
 , quandl
-, scikitlearn
+, scikit-learn
 , yfinance
   # Optional inputs
 , withTorch ? false
@@ -59,7 +59,7 @@ buildPythonPackage rec {
     qiskit-terra
     qiskit-ignis
     quandl
-    scikitlearn
+    scikit-learn
     yfinance
   ] ++ lib.optionals (withTorch) [ pytorch ]
   ++ lib.optionals (withPyscf) [ pyscf ]
diff --git a/pkgs/development/python-modules/qiskit-ignis/default.nix b/pkgs/development/python-modules/qiskit-ignis/default.nix
index 403fa0f05a9..996259f683b 100644
--- a/pkgs/development/python-modules/qiskit-ignis/default.nix
+++ b/pkgs/development/python-modules/qiskit-ignis/default.nix
@@ -5,7 +5,7 @@
 , python
 , numpy
 , qiskit-terra
-, scikitlearn
+, scikit-learn
 , scipy
   # Optional package inputs
 , withVisualization ? false
@@ -44,7 +44,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [
     numpy
     qiskit-terra
-    scikitlearn
+    scikit-learn
     scipy
   ] ++ lib.optionals (withCvx) [ cvxpy ]
   ++ lib.optionals (withVisualization) [ matplotlib ]
diff --git a/pkgs/development/python-modules/ripser/default.nix b/pkgs/development/python-modules/ripser/default.nix
index acd017a7a2e..7bc7df0b8fd 100644
--- a/pkgs/development/python-modules/ripser/default.nix
+++ b/pkgs/development/python-modules/ripser/default.nix
@@ -5,7 +5,7 @@
 , cython
 , numpy
 , scipy
-, scikitlearn
+, scikit-learn
 , persim
 , pytest
 }:
@@ -28,7 +28,7 @@ buildPythonPackage rec {
     cython
     numpy
     scipy
-    scikitlearn
+    scikit-learn
     persim
   ];
 
diff --git a/pkgs/development/python-modules/scikit-bio/default.nix b/pkgs/development/python-modules/scikit-bio/default.nix
index f13fecc0855..fe4cd4ea48d 100644
--- a/pkgs/development/python-modules/scikit-bio/default.nix
+++ b/pkgs/development/python-modules/scikit-bio/default.nix
@@ -12,7 +12,7 @@
 , pandas
 , scipy
 , hdmedians
-, scikitlearn
+, scikit-learn
 , coverage
 , python
 , isPy3k
@@ -30,7 +30,7 @@ buildPythonPackage rec {
 
   buildInputs = [ cython ];
   checkInputs = [ coverage ];
-  propagatedBuildInputs = [ lockfile cachecontrol decorator ipython matplotlib natsort numpy pandas scipy hdmedians scikitlearn ];
+  propagatedBuildInputs = [ lockfile cachecontrol decorator ipython matplotlib natsort numpy pandas scipy hdmedians scikit-learn ];
 
   # cython package not included for tests
   doCheck = false;
diff --git a/pkgs/development/python-modules/scikitlearn/0.20.nix b/pkgs/development/python-modules/scikit-learn/0.20.nix
similarity index 100%
rename from pkgs/development/python-modules/scikitlearn/0.20.nix
rename to pkgs/development/python-modules/scikit-learn/0.20.nix
diff --git a/pkgs/development/python-modules/scikitlearn/default.nix b/pkgs/development/python-modules/scikit-learn/default.nix
similarity index 100%
rename from pkgs/development/python-modules/scikitlearn/default.nix
rename to pkgs/development/python-modules/scikit-learn/default.nix
diff --git a/pkgs/development/python-modules/scikit-optimize/default.nix b/pkgs/development/python-modules/scikit-optimize/default.nix
index 0a5171f22fb..3b7106ac4f2 100644
--- a/pkgs/development/python-modules/scikit-optimize/default.nix
+++ b/pkgs/development/python-modules/scikit-optimize/default.nix
@@ -5,7 +5,7 @@
 , matplotlib
 , numpy
 , scipy
-, scikitlearn
+, scikit-learn
 , pyaml
 , pytestCheckHook
 }:
@@ -26,7 +26,7 @@ buildPythonPackage rec {
     matplotlib
     numpy
     scipy
-    scikitlearn
+    scikit-learn
     pyaml
   ];
 
diff --git a/pkgs/development/python-modules/scikit-tda/default.nix b/pkgs/development/python-modules/scikit-tda/default.nix
index f6d573573b9..bf3e1d1ef46 100644
--- a/pkgs/development/python-modules/scikit-tda/default.nix
+++ b/pkgs/development/python-modules/scikit-tda/default.nix
@@ -3,7 +3,7 @@
 , fetchFromGitHub
 , numpy
 , scipy
-, scikitlearn
+, scikit-learn
 , matplotlib
 , numba
 , umap-learn
@@ -32,7 +32,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [
     numpy
     scipy
-    scikitlearn
+    scikit-learn
     matplotlib
     numba
     umap-learn
diff --git a/pkgs/development/python-modules/seqeval/default.nix b/pkgs/development/python-modules/seqeval/default.nix
index 15322632ad7..9ed516e4d5c 100644
--- a/pkgs/development/python-modules/seqeval/default.nix
+++ b/pkgs/development/python-modules/seqeval/default.nix
@@ -2,7 +2,7 @@
 , buildPythonPackage
 , fetchFromGitHub
 , numpy
-, scikitlearn
+, scikit-learn
 , perl
 , pytestCheckHook
 }:
@@ -27,7 +27,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [
     numpy
-    scikitlearn
+    scikit-learn
   ];
 
   checkInputs = [
diff --git a/pkgs/development/python-modules/shap/default.nix b/pkgs/development/python-modules/shap/default.nix
index 5600f4a6aa0..128dacfd55a 100644
--- a/pkgs/development/python-modules/shap/default.nix
+++ b/pkgs/development/python-modules/shap/default.nix
@@ -5,7 +5,7 @@
 , pytestCheckHook
 , numpy
 , scipy
-, scikitlearn
+, scikit-learn
 , pandas
 , tqdm
 , slicer
@@ -30,7 +30,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [
     numpy
     scipy
-    scikitlearn
+    scikit-learn
     pandas
     tqdm
     slicer
diff --git a/pkgs/development/python-modules/sklearn-deap/default.nix b/pkgs/development/python-modules/sklearn-deap/default.nix
index d973bc70bcd..2530b965203 100644
--- a/pkgs/development/python-modules/sklearn-deap/default.nix
+++ b/pkgs/development/python-modules/sklearn-deap/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchFromGitHub, fetchpatch, numpy, scipy, deap, scikitlearn, python }:
+{ lib, buildPythonPackage, fetchFromGitHub, fetchpatch, numpy, scipy, deap, scikit-learn, python }:
 
 buildPythonPackage rec {
   pname = "sklearn-deap";
@@ -20,7 +20,7 @@ buildPythonPackage rec {
     })
   ];
 
-  propagatedBuildInputs = [ numpy scipy deap scikitlearn ];
+  propagatedBuildInputs = [ numpy scipy deap scikit-learn ];
 
   checkPhase = ''
     ${python.interpreter} test.py
diff --git a/pkgs/development/python-modules/skorch/default.nix b/pkgs/development/python-modules/skorch/default.nix
index 3504557b502..db3b8ed4312 100644
--- a/pkgs/development/python-modules/skorch/default.nix
+++ b/pkgs/development/python-modules/skorch/default.nix
@@ -8,7 +8,7 @@
 , numpy
 , pandas
 , pytorch
-, scikitlearn
+, scikit-learn
 , scipy
 , tabulate
 , tqdm
@@ -23,7 +23,7 @@ buildPythonPackage rec {
     sha256 = "9910f97339e654c8d38e0075d87b735e69e5eb11db59c527fb36705b30c8d0a4";
   };
 
-  propagatedBuildInputs = [ numpy pytorch scikitlearn scipy tabulate tqdm ];
+  propagatedBuildInputs = [ numpy pytorch scikit-learn scipy tabulate tqdm ];
   checkInputs = [ pytest pytestcov flaky pandas pytestCheckHook ];
 
   disabledTests = [
diff --git a/pkgs/development/python-modules/textacy/default.nix b/pkgs/development/python-modules/textacy/default.nix
index 31b02e3f264..9f9fe685c95 100644
--- a/pkgs/development/python-modules/textacy/default.nix
+++ b/pkgs/development/python-modules/textacy/default.nix
@@ -9,7 +9,7 @@
 , pyphen
 , pytest
 , requests
-, scikitlearn
+, scikit-learn
 , scipy
 , spacy
 , srsly
@@ -35,7 +35,7 @@ buildPythonPackage rec {
     pyemd
     pyphen
     requests
-    scikitlearn
+    scikit-learn
     scipy
     spacy
     srsly
diff --git a/pkgs/development/python-modules/umap-learn/default.nix b/pkgs/development/python-modules/umap-learn/default.nix
index f888704e6a8..fcf96a715f1 100644
--- a/pkgs/development/python-modules/umap-learn/default.nix
+++ b/pkgs/development/python-modules/umap-learn/default.nix
@@ -3,7 +3,7 @@
 , fetchFromGitHub
 , nose
 , numpy
-, scikitlearn
+, scikit-learn
 , scipy
 , numba
 , pynndescent
@@ -24,7 +24,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [
     numpy
-    scikitlearn
+    scikit-learn
     scipy
     numba
     pynndescent
diff --git a/pkgs/development/python-modules/vowpalwabbit/default.nix b/pkgs/development/python-modules/vowpalwabbit/default.nix
index da13ad21026..c4822113204 100644
--- a/pkgs/development/python-modules/vowpalwabbit/default.nix
+++ b/pkgs/development/python-modules/vowpalwabbit/default.nix
@@ -11,7 +11,7 @@
 , pygments
 , numpy
 , scipy
-, scikitlearn }:
+, scikit-learn }:
 
 buildPythonPackage rec {
   pname = "vowpalwabbit";
@@ -36,7 +36,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [
     numpy
-    scikitlearn
+    scikit-learn
     scipy
   ];
 
diff --git a/pkgs/development/python-modules/word2vec/default.nix b/pkgs/development/python-modules/word2vec/default.nix
index 259566c8fc2..bda8f59d2ef 100644
--- a/pkgs/development/python-modules/word2vec/default.nix
+++ b/pkgs/development/python-modules/word2vec/default.nix
@@ -4,7 +4,7 @@
 , fetchzip
 , cython
 , numpy
-, scikitlearn
+, scikit-learn
 , six
 , setuptools_scm
 , gcc
@@ -30,7 +30,7 @@ buildPythonPackage rec {
 
   nativeBuildInputs = [ setuptools_scm gcc ];
 
-  propagatedBuildInputs = [ cython numpy scikitlearn six ];
+  propagatedBuildInputs = [ cython numpy scikit-learn six ];
 
   checkInputs = [ pytest pytestcov ];
 
diff --git a/pkgs/development/python-modules/xgboost/default.nix b/pkgs/development/python-modules/xgboost/default.nix
index b113e2c3709..4f02d72c9a1 100644
--- a/pkgs/development/python-modules/xgboost/default.nix
+++ b/pkgs/development/python-modules/xgboost/default.nix
@@ -2,7 +2,7 @@
 , pytestCheckHook
 , cmake
 , scipy
-, scikitlearn
+, scikit-learn
 , stdenv
 , xgboost
 , substituteAll
@@ -22,7 +22,7 @@ buildPythonPackage {
   propagatedBuildInputs = [ scipy ];
   checkInputs = [
     pytestCheckHook
-    scikitlearn
+    scikit-learn
     pandas
     matplotlib
     graphviz
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 3ecf4494ff4..89d3bfc87e7 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -7350,10 +7350,12 @@ in {
 
   scikitimage = callPackage ../development/python-modules/scikit-image { };
 
-  scikitlearn = callPackage ../development/python-modules/scikitlearn {
+  scikit-learn = callPackage ../development/python-modules/scikit-learn {
     inherit (pkgs) gfortran glibcLocales;
   };
 
+  scikitlearn = self.scikit-learn;
+
   scikit-optimize = callPackage ../development/python-modules/scikit-optimize { };
 
   scikits-odes = callPackage ../development/python-modules/scikits-odes { };
diff --git a/pkgs/top-level/python2-packages.nix b/pkgs/top-level/python2-packages.nix
index 9eae7555ea4..221da6daa9a 100644
--- a/pkgs/top-level/python2-packages.nix
+++ b/pkgs/top-level/python2-packages.nix
@@ -524,7 +524,7 @@ with self; with super; {
 
   scandir = callPackage ../development/python-modules/scandir { };
 
-  scikitlearn = callPackage ../development/python-modules/scikitlearn/0.20.nix {
+  scikit-learn = callPackage ../development/python-modules/scikit-learn/0.20.nix {
     inherit (pkgs) gfortran glibcLocales;
   };