diff --git a/pkgs/development/python-modules/jupyterhub/default.nix b/pkgs/development/python-modules/jupyterhub/default.nix
index fecc8c1aeaa4..e15e910eb6eb 100644
--- a/pkgs/development/python-modules/jupyterhub/default.nix
+++ b/pkgs/development/python-modules/jupyterhub/default.nix
@@ -141,11 +141,6 @@ buildPythonPackage rec {
     importlib-metadata
   ];
 
-  preCheck = ''
-    substituteInPlace jupyterhub/tests/test_spawner.py --replace \
-      "'jupyterhub-singleuser'" "'$out/bin/jupyterhub-singleuser'"
-  '';
-
   nativeCheckInputs = [
     beautifulsoup4
     cryptography
@@ -161,12 +156,18 @@ buildPythonPackage rec {
     virtualenv
   ];
 
+  preCheck = ''
+    substituteInPlace jupyterhub/tests/test_spawner.py --replace \
+      "'jupyterhub-singleuser'" "'$out/bin/jupyterhub-singleuser'"
+    export PATH="$PATH:$out/bin";
+  '';
+
   disabledTests = [
     # Tries to install older versions through pip
     "test_upgrade"
     # Testcase fails to find requests import
     "test_external_service"
-    # attempts to do ssl connection
+    # Attempts to do TLS connection
     "test_connection_notebook_wrong_certs"
     # AttributeError: 'coroutine' object...
     "test_valid_events"
diff --git a/pkgs/development/python-modules/oauthenticator/default.nix b/pkgs/development/python-modules/oauthenticator/default.nix
index d9169997a246..aab9ae98c024 100644
--- a/pkgs/development/python-modules/oauthenticator/default.nix
+++ b/pkgs/development/python-modules/oauthenticator/default.nix
@@ -14,14 +14,14 @@
 
 buildPythonPackage rec {
   pname = "oauthenticator";
-  version = "16.0.4";
+  version = "16.0.5";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-6dZt+GIbmOgC+R5KlFc5W2jpPaxCn+GkNkVhR/4Tke8=";
+    hash = "sha256-ddCqr6qIIyU3EQ6p2i+U6F359j3hcZ7E2X8qbeUz2e8=";
   };
 
   postPatch = ''