diff --git a/pkgs/development/python-modules/thinc/default.nix b/pkgs/development/python-modules/thinc/default.nix
index 6d1935b7c591..99126084f28a 100644
--- a/pkgs/development/python-modules/thinc/default.nix
+++ b/pkgs/development/python-modules/thinc/default.nix
@@ -28,14 +28,14 @@
 
 buildPythonPackage rec {
   pname = "thinc";
-  version = "9.1.1";
+  version = "8.3.0";
   pyproject = true;
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-IfrimG13d6bwULkEbcnqsRhS8cmpl9zJAy8+zCJ4Sko=";
+    hash = "sha256-6zvtVPXADsmt2qogjFHM+gWUg9cxQM1RWqMzc3Fcblk=";
   };
 
   postPatch = ''