diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 20813db..6cb3d25 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -14,7 +14,7 @@ repos:
         args: [--fix, lf]
       - id: trailing-whitespace
   - repo: https://github.com/PyCQA/isort
-    rev: 5.10.1
+    rev: 5.12.0
     hooks:
       - id: isort
   - repo: https://github.com/pre-commit/mirrors-prettier
diff --git a/sphinx_json_schema_spec/__init__.py b/sphinx_json_schema_spec/__init__.py
index 288e287..3c75030 100644
--- a/sphinx_json_schema_spec/__init__.py
+++ b/sphinx_json_schema_spec/__init__.py
@@ -19,6 +19,7 @@
     "validation": urljoin(BASE_URL, "json-schema-validation.html"),
 }
 HARDCODED = {
+    "$dynamicRef": "https://json-schema.org/draft/2020-12/json-schema-core.html#dynamic-ref",                        # noqa: E501
     "$ref": "https://json-schema.org/draft/2020-12/json-schema-core.html#ref",
     "$schema": "https://json-schema.org/draft/2020-12/json-schema-core.html#name-the-schema-keyword",                # noqa: E501
     "format": "https://json-schema.org/draft/2020-12/json-schema-validation.html#name-implementation-requirements",  # noqa: E501