diff --git a/pkgs/applications/office/paperless-ngx/default.nix b/pkgs/applications/office/paperless-ngx/default.nix
index 309c5812e4ea..f3a7a4f5f068 100644
--- a/pkgs/applications/office/paperless-ngx/default.nix
+++ b/pkgs/applications/office/paperless-ngx/default.nix
@@ -81,12 +81,12 @@ let
 in
 python.pkgs.pythonPackages.buildPythonApplication rec {
   pname = "paperless-ngx";
-  version = "1.10.2";
+  version = "1.11.3";
 
   # Fetch the release tarball instead of a git ref because it contains the prebuilt frontend
   src = fetchurl {
     url = "https://github.com/paperless-ngx/paperless-ngx/releases/download/v${version}/${pname}-v${version}.tar.xz";
-    hash = "sha256-uOrRHHNqIYsDbzKcA7EsYZjadpLyAB4Ks+PU+BNsTWE=";
+    hash = "sha256-wGNkdczgV+UDd9ZO+BXMSWotpetE/+c/jJAAH+6SXps=";
   };
 
   format = "other";
@@ -99,6 +99,7 @@ python.pkgs.pythonPackages.buildPythonApplication rec {
     attrs
     autobahn
     automat
+    bleach
     blessed
     celery
     certifi
@@ -128,6 +129,7 @@ python.pkgs.pythonPackages.buildPythonApplication rec {
     httptools
     humanfriendly
     hyperlink
+    imagehash
     idna
     imap-tools
     img2pdf
@@ -138,6 +140,7 @@ python.pkgs.pythonPackages.buildPythonApplication rec {
     langdetect
     lxml
     msgpack
+    nltk
     numpy
     ocrmypdf
     pathvalidate
diff --git a/pkgs/development/python-modules/imagehash/default.nix b/pkgs/development/python-modules/imagehash/default.nix
new file mode 100644
index 000000000000..adc13af421e7
--- /dev/null
+++ b/pkgs/development/python-modules/imagehash/default.nix
@@ -0,0 +1,39 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pytestCheckHook
+, numpy
+, six
+, scipy
+, pillow
+, pywavelets
+}:
+
+buildPythonPackage rec {
+  pname = "imagehash";
+  version = "4.3.1";
+
+  src = fetchFromGitHub {
+    owner = "JohannesBuchner";
+    repo = "imagehash";
+    rev = "v${version}";
+    hash = "sha256-Tsq10TZqnzNTuO4goKjdylN4Eqy7DNbHLjr5n3+nidM=";
+  };
+
+  propagatedBuildInputs = [
+    numpy
+    six
+    scipy
+    pillow
+    pywavelets
+  ];
+
+  checkInputs = [ pytestCheckHook ];
+
+  meta = with lib; {
+    description = "A Python Perceptual Image Hashing Module";
+    homepage = "https://github.com/JohannesBuchner/imagehash";
+    license = licenses.bsd2;
+    maintainers = with maintainers; [ e1mo ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 5aee4df7493d..224684bc1faf 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -4525,6 +4525,8 @@ self: super: with self; {
 
   imagecorruptions = callPackage ../development/python-modules/imagecorruptions { };
 
+  imagehash = callPackage ../development/python-modules/imagehash { };
+
   imageio = callPackage ../development/python-modules/imageio { };
 
   imageio-ffmpeg = callPackage ../development/python-modules/imageio-ffmpeg { };