diff --git a/pkgs/development/python-modules/envs/default.nix b/pkgs/development/python-modules/envs/default.nix
index 25e6d235cff3..3f095459642a 100644
--- a/pkgs/development/python-modules/envs/default.nix
+++ b/pkgs/development/python-modules/envs/default.nix
@@ -1,29 +1,29 @@
 { lib
 , buildPythonPackage
-, fetchPypi
-, fetchpatch
 , click
+, fetchPypi
 , jinja2
-, terminaltables
 , mock
 , nose
+, poetry-core
+, pythonOlder
+, terminaltables
 }:
 
 buildPythonPackage rec {
   pname = "envs";
-  version = "1.3";
+  version = "1.4";
+  format = "pyproject";
+
+  disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "ccf5cd85ddb8ed335e39ed8a22e0d23658f5a6d7da430f225e6f750c6f50ae42";
+    hash = "sha256-nYQ1xphdHN1oKZ4ExY4r24rmz2ayWWqAeeb5qT8qA5g=";
   };
 
-  patches = [
-    # https://github.com/capless/envs/pull/19
-    (fetchpatch {
-      url = "https://github.com/capless/envs/commit/6947043fa9120a7b17094fd43ee0e1edf808f42b.patch";
-      sha256 = "0zswg8kp2g922mkc7x34ps37qli1d1mjwna2jfrbnsq2fg4mk818";
-    })
+  nativeBuildInputs = [
+    poetry-core
   ];
 
   propagatedBuildInputs = [
@@ -45,6 +45,10 @@ buildPythonPackage rec {
     runHook postCheck
   '';
 
+  pythonImportsCheck = [
+    "envs"
+  ];
+
   meta = with lib; {
     description = "Easy access to environment variables from Python";
     homepage = "https://github.com/capless/envs";