diff --git a/pkgs/development/python-modules/kaitaistruct/01-add-kaitai-compress.patch b/pkgs/development/python-modules/kaitaistruct/01-add-kaitai-compress.patch
new file mode 100644
index 000000000000..30f6b90c3eda
--- /dev/null
+++ b/pkgs/development/python-modules/kaitaistruct/01-add-kaitai-compress.patch
@@ -0,0 +1,11 @@
+diff --git a/setup.cfg b/setup.cfg
+--- a/setup.cfg
++++ b/setup.cfg
+@@ -30,6 +30,7 @@ classifiers =
+ [options]
+ zip_safe = True
+ include_package_data = True
++packages = kaitai/compress
+ py_modules = kaitaistruct
+ python_requires = >=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*
+ install_requires =
diff --git a/pkgs/development/python-modules/kaitaistruct/default.nix b/pkgs/development/python-modules/kaitaistruct/default.nix
index 24807eacdc00..8e677ef815fc 100644
--- a/pkgs/development/python-modules/kaitaistruct/default.nix
+++ b/pkgs/development/python-modules/kaitaistruct/default.nix
@@ -18,17 +18,18 @@ let
 in
 buildPythonPackage rec {
   pname = "kaitaistruct";
-  version = "0.10";
+  version = "0.11";
   pyproject = true;
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-oETe4pFz1q+6zye8rDna+JtlTdQYz6AJq4LZF4qa5So=";
+    hash = "sha256-BT7nZCiOeLjlOs90jpczJorL1Xm42CpCexgFRTYl10s=";
   };
 
+  patches = [ ./01-add-kaitai-compress.patch ];
+
   preBuild = ''
     ln -s ${kaitai_compress}/python/kaitai kaitai
-    sed '32ipackages = kaitai/compress' -i setup.cfg
   '';
 
   build-system = [ setuptools ];
diff --git a/pkgs/development/python-modules/mitmproxy/default.nix b/pkgs/development/python-modules/mitmproxy/default.nix
index a3bc6a665655..79ebd184290e 100644
--- a/pkgs/development/python-modules/mitmproxy/default.nix
+++ b/pkgs/development/python-modules/mitmproxy/default.nix
@@ -52,6 +52,7 @@ buildPythonPackage rec {
     "cryptography"
     "flask"
     "h2"
+    "kaitaistruct"
     "passlib"
     "pyopenssl"
     "tornado"