diff --git a/pkgs/development/tools/check-jsonschema/default.nix b/pkgs/development/tools/check-jsonschema/default.nix
index 068bc752d32..dd49074300a 100644
--- a/pkgs/development/tools/check-jsonschema/default.nix
+++ b/pkgs/development/tools/check-jsonschema/default.nix
@@ -4,13 +4,13 @@ with python3.pkgs;
 
 buildPythonApplication rec {
   pname = "check-jsonschema";
-  version = "0.16.2";
+  version = "0.18.3";
 
   src = fetchFromGitHub {
     owner = "python-jsonschema";
     repo = "check-jsonschema";
     rev = version;
-    sha256 = "sha256-rPjXua5kITr+I+jqeAO2iGUFVhjkLnQkXlUzRvkXduA=";
+    sha256 = "sha256-9Ejcxr/22rJu8JoC7WspLfzF08elz4TaGagDeV0zIXk=";
   };
 
   propagatedBuildInputs = [
@@ -27,6 +27,11 @@ buildPythonApplication rec {
     responses
   ];
 
+  pytestFlagsArray = [
+    # DeprecationWarning: Accessing jsonschema.draft3_format_checker is deprecated and will be removed in a future release. Instead, use the FORMAT_CHECKER attribute on the corresponding Validator.
+    "-W" "ignore::DeprecationWarning"
+  ];
+
   preCheck = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
     # https://github.com/python/cpython/issues/74570#issuecomment-1093748531
     export no_proxy='*';