diff --git a/pkgs/development/python-modules/pyasn/default.nix b/pkgs/development/python-modules/pyasn/default.nix
index b180226ec46c..3054af1b4e09 100644
--- a/pkgs/development/python-modules/pyasn/default.nix
+++ b/pkgs/development/python-modules/pyasn/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchPypi, }:
+{ lib, buildPythonPackage, fetchPypi, fetchFromGitHub, python, }:
 
 buildPythonPackage rec {
   pname = "pyasn";
@@ -9,6 +9,18 @@ buildPythonPackage rec {
     sha256 = "sha256-6UK1SRY2Pse4tw6urs0OtOQe8bz0ojl7KabXFfzN+SU=";
   };
 
+  datasrc = fetchFromGitHub {
+    owner = "hadiasghari";
+    repo = "pyasn";
+    rev = "${version}";
+    sha256 = "sha256-R7Vi1Mn44Mg3HQLDk9O43MkXXwbLRr/jjVKSHJvgYj0";
+  };
+
+  postInstall = ''
+    install -dm755 $out/${python.sitePackages}/pyasn/data
+    cp $datasrc/data/* $out/${python.sitePackages}/pyasn/data
+  '';
+
   doCheck = false; # Tests require internet connection which wont work
 
   pythonImportsCheck = [ "pyasn" ];
diff --git a/pkgs/tools/networking/opensnitch/ui.nix b/pkgs/tools/networking/opensnitch/ui.nix
index 6d3d7fd3058e..3650792e1819 100644
--- a/pkgs/tools/networking/opensnitch/ui.nix
+++ b/pkgs/tools/networking/opensnitch/ui.nix
@@ -15,6 +15,11 @@ python3Packages.buildPythonApplication rec {
     sha256 = "sha256-8IfupmQb1romGEvv/xqFkYhp0gGoY4ZEllX6rZYIkqw=";
   };
 
+  postPatch = ''
+    substituteInPlace ui/opensnitch/utils.py \
+      --replace /usr/lib/python3/dist-packages/data ${python3Packages.pyasn}/${python3Packages.python.sitePackages}/pyasn/data
+  '';
+
   nativeBuildInputs = [
     python3Packages.pyqt5
     wrapQtAppsHook
@@ -32,7 +37,9 @@ python3Packages.buildPythonApplication rec {
 
   preBuild = ''
     make -C ../proto ../ui/opensnitch/ui_pb2.py
+    # sourced from ui/Makefile
     pyrcc5 -o opensnitch/resources_rc.py opensnitch/res/resources.qrc
+    sed -i 's/^import ui_pb2/from . import ui_pb2/' opensnitch/ui_pb2*
   '';
 
   preConfigure = ''
@@ -44,7 +51,7 @@ python3Packages.buildPythonApplication rec {
   '';
 
   postInstall = ''
-    mv $out/lib/python3.9/site-packages/usr/* $out/
+    mv $out/${python3Packages.python.sitePackages}/usr/* $out/
   '';
 
   dontWrapQtApps = true;