diff --git a/pkgs/development/python-modules/lmdb/default.nix b/pkgs/development/python-modules/lmdb/default.nix
index f78b3fe2cf11..a97f71dad212 100644
--- a/pkgs/development/python-modules/lmdb/default.nix
+++ b/pkgs/development/python-modules/lmdb/default.nix
@@ -3,6 +3,7 @@
   buildPythonPackage,
   fetchPypi,
   setuptools,
+  patch-ng,
   pytestCheckHook,
   cffi,
   lmdb,
@@ -11,20 +12,24 @@
 
 buildPythonPackage rec {
   pname = "lmdb";
-  version = "1.6.2";
+  version = "1.7.3";
   pyproject = true;
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-0o4/pZk1/2iIWHYOxS8gLsuMEImj9o0fFi6jB40VHnM=";
+    hash = "sha256-1KJ7evT+OPNAnZ+/v0e2F7PZTe6YoAvIwqgzbM0/mxU=";
   };
 
   build-system = [ setuptools ];
 
   buildInputs = [ lmdb ];
 
+  env.LMDB_FORCE_SYSTEM = 1;
+
+  dependencies = [ patch-ng ];
+
   pythonImportsCheck = [ "lmdb" ];
 
   nativeCheckInputs = [
@@ -32,8 +37,6 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  LMDB_FORCE_SYSTEM = 1;
-
   meta = {
     description = "Universal Python binding for the LMDB 'Lightning' Database";
     homepage = "https://github.com/dw/py-lmdb";