diff --git a/pkgs/development/python-modules/libcst/default.nix b/pkgs/development/python-modules/libcst/default.nix
index 6f3f2d3def64..0b20a803904f 100644
--- a/pkgs/development/python-modules/libcst/default.nix
+++ b/pkgs/development/python-modules/libcst/default.nix
@@ -19,31 +19,31 @@
 
 buildPythonPackage rec {
   pname = "libcst";
-  version = "0.4.9";
+  version = "1.0.1";
   format = "pyproject";
 
   disabled = pythonOlder "3.7";
 
   src = fetchFromGitHub {
     owner = "instagram";
-    repo = pname;
+    repo = "libcst";
     rev = "refs/tags/v${version}";
-    hash = "sha256-ikddvKsvXMNHMfA9jUhvyiDXII0tTs/rE97IGI/azgA=";
+    hash = "sha256-FgQE8ofRXQs/zHh7AKscXu0deN3IG+Nk/h+a09Co5R8=";
   };
 
   cargoDeps = rustPlatform.fetchCargoTarball {
     inherit src;
     sourceRoot = "source/${cargoRoot}";
     name = "${pname}-${version}";
-    hash = "sha256-FWQGv3E5X+VEnTYD0uKN6W4USth8EQlEGbYgUAWZ5EQ=";
+    hash = "sha256-rPB3bAMdvjgsT3jkEDoWatW8LPwgIaFSbFPqiqANtBY=";
   };
 
   cargoRoot = "native";
 
   postPatch = ''
-    # test try to format files, which isn't necessary when consuming releases
-    sed -i libcst/codegen/generate.py \
-      -e '/ufmt/c\        pass'
+    # avoid infinite recursion by not formatting the release files
+    substituteInPlace libcst/codegen/generate.py \
+      --replace '"ufmt"' '"true"'
   '';
 
   SETUPTOOLS_SCM_PRETEND_VERSION = version;
@@ -70,8 +70,12 @@ buildPythonPackage rec {
   ];
 
   preCheck = ''
+    # otherwise import libcst.native fails
+    cp build/lib.*/libcst/native.* libcst/
+
     ${python.interpreter} -m libcst.codegen.generate visitors
     ${python.interpreter} -m libcst.codegen.generate return_types
+
     # Can't run all tests due to circular dependency on hypothesmith -> libcst
     rm -r {libcst/tests,libcst/codegen/tests,libcst/m*/tests}
   '';