diff --git a/pkgs/development/tools/dt-schema/default.nix b/pkgs/development/tools/dt-schema/default.nix
index 12dd9f662caf..6ee649595ae2 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 = "2021.7";
+  version = "2021.10";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-11eCRY3zptsXI4kAIz3jLrTON4j2QTz/xG7vgUgyVA0=";
+    sha256 = "d09c94d13f46e6674ba11ff31220651ad1b02dae860f5a87905dfac6b8d768d9";
   };
 
   nativeBuildInputs = [ setuptools-scm git ];