diff --git a/pkgs/development/python-modules/scikit-learn/default.nix b/pkgs/development/python-modules/scikit-learn/default.nix
index dbe2d10b780a..7499eb6e9de9 100644
--- a/pkgs/development/python-modules/scikit-learn/default.nix
+++ b/pkgs/development/python-modules/scikit-learn/default.nix
@@ -19,12 +19,12 @@
 
 buildPythonPackage rec {
   pname = "scikit-learn";
-  version = "1.2.0";
+  version = "1.2.1";
   disabled = pythonOlder "3.6";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-aAtls8ruRpVBOF0spbA/9wQI9sYYxYOUgxLw0hJd9oA=";
+    sha256 = "sha256-+/ilyJPJtLmbzH7Y+z6FAJV6ET9BAYYDhtBmNVIPfPs=";
   };
 
   buildInputs = [
diff --git a/pkgs/development/python-modules/umap-learn/default.nix b/pkgs/development/python-modules/umap-learn/default.nix
index 79d7e40bbc94..001a5f1b4208 100644
--- a/pkgs/development/python-modules/umap-learn/default.nix
+++ b/pkgs/development/python-modules/umap-learn/default.nix
@@ -1,6 +1,7 @@
 { lib
 , buildPythonPackage
 , fetchFromGitHub
+, fetchpatch
 , keras
 , numba
 , numpy
@@ -27,6 +28,22 @@ buildPythonPackage rec {
     hash = "sha256-S2+k7Ec4AxsN6d0GUGnU81oLnBgmlZp8OmUFCNaUJYw=";
   };
 
+  patches = [
+    # Fix tests with sklearn>=1.2.0
+    (fetchpatch {
+      url = "https://github.com/lmcinnes/umap/commit/a714b59bd9e2ca2e63312bc3491b2b037a42f2f2.patch";
+      hash = "sha256-WOSWNN5ewVTV7IEBEA7ZzgZYMZxctF1jAWs9ylKTyLs=";
+    })
+    (fetchpatch {
+      url = "https://github.com/lmcinnes/umap/commit/c7d05683325589ad432a55e109cacb9d631cfaa9.patch";
+      hash = "sha256-hE2Svxf7Uja+DbCmTDCnd7mZynjNbC5GUjfqg4ZRO9Y=";
+    })
+    (fetchpatch {
+      url = "https://github.com/lmcinnes/umap/commit/949abd082524fce8c45dfb147bcd8e8ef49eade3.patch";
+      hash = "sha256-8/1k8iYeF77FIaUApNtY07auPJkrt3vNRR/HTYRvq+0=";
+    })
+  ];
+
   propagatedBuildInputs = [
     numba
     numpy