diff --git a/pkgs/applications/misc/octoprint/default.nix b/pkgs/applications/misc/octoprint/default.nix
index 1af2571e48a2..6c631ad3130f 100644
--- a/pkgs/applications/misc/octoprint/default.nix
+++ b/pkgs/applications/misc/octoprint/default.nix
@@ -4,7 +4,6 @@
 , lib
 , fetchFromGitHub
 , python3
-, fetchPypi
 , substituteAll
 , nix-update-script
 , nixosTests
@@ -17,43 +16,6 @@ let
     self = py;
     packageOverrides = lib.foldr lib.composeExtensions (self: super: { }) (
       [
-        (
-          # with version 3 of flask-limiter octoprint 1.8.7 fails to start with
-          #  TypeError: Limiter.__init__() got multiple values for argument 'key_func'
-          self: super: {
-            flask-limiter = super.flask-limiter.overridePythonAttrs (oldAttrs: rec {
-              version = "2.6.2";
-              src = fetchFromGitHub {
-                owner = "alisaifee";
-                repo = "flask-limiter";
-                rev = version;
-                sha256 = "sha256-eWOdJ7m3cY08ASN/X+7ILJK99iLJJwCY8294fwJiDew=";
-              };
-            });
-            flask-babel = super.flask-babel.overridePythonAttrs (oldAttrs: rec {
-              version = "2.0.0";
-              src = fetchPypi {
-                pname = "Flask-Babel";
-                inherit version;
-                sha256 = "sha256-+fr0XNsuGjLqLsFEA1h9QpUQjzUBenghorGsuM/ZJX0=";
-              };
-              nativeBuildInputs = [ ];
-              format = "setuptools";
-              outputs = [ "out" ];
-              patches = [ ];
-            });
-            # downgrade needed for flask-babel 2.0.0
-            babel = super.babel.overridePythonAttrs (oldAttrs: rec {
-              version = "2.11.0";
-              src = fetchPypi {
-                pname = "Babel";
-                inherit version;
-                hash = "sha256-XvSzImsBgN7d7UIpZRyLDho6aig31FoHMnLzE+TPl/Y=";
-              };
-              propagatedBuildInputs = [ self.pytz ];
-            });
-          }
-        )
         # Built-in dependency
         (
           self: super: {
@@ -94,14 +56,14 @@ let
           self: super: {
             octoprint-pisupport = self.buildPythonPackage rec {
               pname = "OctoPrint-PiSupport";
-              version = "2022.6.13";
+              version = "2023.5.24";
               format = "setuptools";
 
               src = fetchFromGitHub {
                 owner = "OctoPrint";
                 repo = "OctoPrint-PiSupport";
                 rev = version;
-                hash = "sha256-3z5Btl287W3j+L+MQG8FOWt21smML0vpmu9BP48B9A0=";
+                hash = "sha256-KfkZXJ2f02G2ee+J1w+YQRKz+LSWwxVIIwmdevDGhew=";
               };
 
               # requires octoprint itself during tests
@@ -118,13 +80,13 @@ let
           self: super: {
             octoprint = self.buildPythonPackage rec {
               pname = "OctoPrint";
-              version = "1.8.7";
+              version = "1.9.0";
 
               src = fetchFromGitHub {
                 owner = "OctoPrint";
                 repo = "OctoPrint";
                 rev = version;
-                hash = "sha256-g4PYB9YbkX0almRPgMFlb8D633Y5fc3H+Boa541suqc=";
+                hash = "sha256-gTWQSqgksZMxdaZ7V3hmnqXlZ+OMI86RX0lC8z1AEzI=";
               };
 
               propagatedBuildInputs = with self; [
@@ -176,6 +138,8 @@ let
                 wrapt
                 zeroconf
                 zipstream-ng
+                class-doc
+                pydantic
               ] ++ lib.optionals stdenv.isDarwin [
                 py.pkgs.appdirs
               ];
@@ -217,6 +181,7 @@ let
                     "werkzeug"
                     "flask"
                     "Flask-Limiter"
+                    "blinker"
                   ];
                 in
                 ''
diff --git a/pkgs/applications/misc/octoprint/ffmpeg-path.patch b/pkgs/applications/misc/octoprint/ffmpeg-path.patch
index 7ba468ae1a3f..2e7c7dbe0642 100644
--- a/pkgs/applications/misc/octoprint/ffmpeg-path.patch
+++ b/pkgs/applications/misc/octoprint/ffmpeg-path.patch
@@ -1,30 +1,11 @@
-diff --git a/src/octoprint/plugins/corewizard/templates/corewizard_webcam_wizard.jinja2 b/src/octoprint/plugins/corewizard/templates/corewizard_webcam_wizard.jinja2
-index 79342dcd7..6165a4119 100644
---- a/src/octoprint/plugins/corewizard/templates/corewizard_webcam_wizard.jinja2
-+++ b/src/octoprint/plugins/corewizard/templates/corewizard_webcam_wizard.jinja2
-@@ -29,14 +29,3 @@
-     {% include "snippets/settings/webcam/webcamStreamUrl.jinja2" %}
-     {% include "snippets/settings/webcam/webcamSnapshotUrl.jinja2" %}
- </form>
--
--<h4>{{ _('Timelapse Recordings') }}</h4>
--
--{% trans %}<p>
--    To render the snapshots into timelapse recordings, OctoPrint also needs to
--    know the correct <strong>path to FFMPEG</strong>.
--</p>{% endtrans %}
--
--<form class="form-horizontal" data-bind="with: settingsViewModel" onsubmit="return false;">
--    {% include "snippets/settings/webcam/ffmpegPath.jinja2" %}
--</form>
 diff --git a/src/octoprint/server/api/settings.py b/src/octoprint/server/api/settings.py
 index c3e6cea10..ced2f8fa0 100644
 --- a/src/octoprint/server/api/settings.py
 +++ b/src/octoprint/server/api/settings.py
-@@ -130,7 +130,7 @@ def getSettings():
-             "snapshotUrl": s.get(["webcam", "snapshot"]),
+@@ -130,7 +130,7 @@ data["webcam"] = {
+             "webcamEnabled": s.getBoolean(["webcam", "webcamEnabled"]),
              "snapshotTimeout": s.getInt(["webcam", "snapshotTimeout"]),
-             "snapshotSslValidation": s.getBoolean(["webcam", "snapshotSslValidation"]),
+             "timelapseEnabled": s.getBoolean(["webcam", "timelapseEnabled"]),
 -            "ffmpegPath": s.get(["webcam", "ffmpeg"]),
 +            "ffmpegPath": "@ffmpeg@",
              "ffmpegCommandline": s.get(["webcam", "ffmpegCommandline"]),
diff --git a/pkgs/development/python-modules/class-doc/default.nix b/pkgs/development/python-modules/class-doc/default.nix
new file mode 100644
index 000000000000..937a94c953b8
--- /dev/null
+++ b/pkgs/development/python-modules/class-doc/default.nix
@@ -0,0 +1,49 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, poetry-core
+, more-itertools
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "class-doc";
+  version = "0.2.6";
+  format = "pyproject";
+
+  src = fetchFromGitHub {
+    owner = "danields761";
+    repo = "${pname}";
+    rev = "9b122d85ce667d096ebee75a49350bbdbd48686d"; # no 0.2.6 version tag
+    hash = "sha256-4Sn/TuBvBpl1nvJBg327+sVrjGavkYKEYP32DwLWako=";
+  };
+
+  nativeBuildInputs = [
+    poetry-core
+  ];
+
+  postPatch = ''
+    substituteInPlace pyproject.toml --replace \
+      "poetry.masonry.api" \
+      "poetry.core.masonry.api"
+  '';
+
+  propagatedBuildInputs = [
+    more-itertools
+  ];
+
+  nativeCheckInputs = [
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [
+    "class_doc"
+  ];
+
+  meta = with lib; {
+    description = "Extract attributes docstrings defined in various ways";
+    homepage = "https://github.com/danields761/class-doc";
+    license = licenses.mit;
+    maintainers = with maintainers; [ gador ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 6a8dd7112725..bf13d29482ae 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1861,6 +1861,8 @@ self: super: with self; {
 
   cock = callPackage ../development/python-modules/cock { };
 
+  class-doc = callPackage ../development/python-modules/class-doc { };
+
   click = callPackage ../development/python-modules/click { };
 
   clickclick = callPackage ../development/python-modules/clickclick { };