diff --git a/pkgs/development/tools/dt-schema/default.nix b/pkgs/development/tools/dt-schema/default.nix
index 3d420bf19018..7f439d9b59e8 100644
--- a/pkgs/development/tools/dt-schema/default.nix
+++ b/pkgs/development/tools/dt-schema/default.nix
@@ -11,11 +11,11 @@
 
 buildPythonPackage rec {
   pname = "dtschema";
-  version = "2020.12";
+  version = "2021.2.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "01de2598075909f2afb2d45277d0358645066f5bbb1770fca5f1d6f399846924";
+    sha256 = "d9f88f069068dc5dc7e895785d7172d260cbbc34cab3b52704b20e89b80c6de8";
   };
 
   nativeBuildInputs = [ setuptools_scm git ];