diff --git a/src/extension/alterschema/CMakeLists.txt b/src/extension/alterschema/CMakeLists.txt
index ee43cbbab..1e7632925 100644
--- a/src/extension/alterschema/CMakeLists.txt
+++ b/src/extension/alterschema/CMakeLists.txt
@@ -80,6 +80,7 @@ sourcemeta_library(NAMESPACE sourcemeta PROJECT core NAME alterschema
     linter/duplicate_examples.h
     linter/enum_to_const.h
     linter/equal_numeric_bounds_to_const.h
+    linter/forbid_empty_enum.h
     linter/items_array_default.h
     linter/items_schema_default.h
     linter/multiple_of_default.h
diff --git a/src/extension/alterschema/alterschema.cc b/src/extension/alterschema/alterschema.cc
index 131b20c7b..ac8095862 100644
--- a/src/extension/alterschema/alterschema.cc
+++ b/src/extension/alterschema/alterschema.cc
@@ -108,6 +108,7 @@ inline auto APPLIES_TO_POINTERS(std::vector<Pointer> &&keywords)
 #include "linter/duplicate_examples.h"
 #include "linter/enum_to_const.h"
 #include "linter/equal_numeric_bounds_to_const.h"
+#include "linter/forbid_empty_enum.h"
 #include "linter/items_array_default.h"
 #include "linter/items_schema_default.h"
 #include "linter/multiple_of_default.h"
@@ -222,6 +223,7 @@ auto add(SchemaTransformer &bundle, const AlterSchemaMode mode) -> void {
     bundle.add<UnsatisfiableMaxContains>();
     bundle.add<UnsatisfiableMinProperties>();
     bundle.add<EnumToConst>();
+    bundle.add<ForbidEmptyEnum>();
     bundle.add<TopLevelTitle>();
     bundle.add<TopLevelDescription>();
     bundle.add<TopLevelExamples>();
diff --git a/src/extension/alterschema/linter/forbid_empty_enum.h b/src/extension/alterschema/linter/forbid_empty_enum.h
new file mode 100644
index 000000000..98713e252
--- /dev/null
+++ b/src/extension/alterschema/linter/forbid_empty_enum.h
@@ -0,0 +1,35 @@
+class ForbidEmptyEnum final : public SchemaTransformRule {
+public:
+  using mutates = std::true_type;
+  using reframe_after_transform = std::true_type;
+  ForbidEmptyEnum()
+      : SchemaTransformRule{"forbid_empty_enum",
+                            "An empty `enum` validates nothing and is "
+                            "equivalent to `not: {}`"} {};
+
+  [[nodiscard]] auto
+  condition(const sourcemeta::core::JSON &schema,
+            const sourcemeta::core::JSON &,
+            const sourcemeta::core::Vocabularies &vocabularies,
+            const sourcemeta::core::SchemaFrame &,
+            const sourcemeta::core::SchemaFrame::Location &,
+            const sourcemeta::core::SchemaWalker &,
+            const sourcemeta::core::SchemaResolver &) const
+      -> sourcemeta::core::SchemaTransformRule::Result override {
+    ONLY_CONTINUE_IF(vocabularies.contains_any(
+                         {Vocabularies::Known::JSON_Schema_2020_12_Validation,
+                          Vocabularies::Known::JSON_Schema_2019_09_Validation,
+                          Vocabularies::Known::JSON_Schema_Draft_7,
+                          Vocabularies::Known::JSON_Schema_Draft_6,
+                          Vocabularies::Known::JSON_Schema_Draft_4}) &&
+                     schema.is_object() && schema.defines("enum") &&
+                     !schema.defines("not") && schema.at("enum").is_array() &&
+                     schema.at("enum").empty());
+    return APPLIES_TO_KEYWORDS("enum");
+  }
+
+  auto transform(JSON &schema, const Result &) const -> void override {
+    schema.erase("enum");
+    schema.assign("not", JSON::make_object());
+  }
+};
diff --git a/test/alterschema/alterschema_lint_2019_09_test.cc b/test/alterschema/alterschema_lint_2019_09_test.cc
index b68b20641..bf6f714f4 100644
--- a/test/alterschema/alterschema_lint_2019_09_test.cc
+++ b/test/alterschema/alterschema_lint_2019_09_test.cc
@@ -4494,3 +4494,249 @@ TEST(AlterSchema_lint_2019_09, empty_object_as_true_1) {
 
   EXPECT_EQ(document, expected);
 }
+
+TEST(AlterSchema_lint_2019_09, forbid_empty_enum_1) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2019-09/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "enum": []
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2019-09/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "not": true
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_2019_09, forbid_empty_enum_2) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2019-09/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "enum": [1, 2]
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2019-09/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "enum": [1, 2]
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_2019_09, forbid_empty_enum_3) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2019-09/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "type": "string"
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2019-09/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "type": "string"
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_2019_09, forbid_empty_enum_4) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2019-09/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "properties": {
+      "foo": {
+        "enum": []
+      }
+    }
+  })JSON");
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2019-09/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "properties": {
+      "foo": {
+        "not": true
+      }
+    }
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_2019_09, forbid_empty_enum_5) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2019-09/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "$defs": {
+      "A": {
+        "enum": []
+      }
+    },
+    "$ref": "#/$defs/A"
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2019-09/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "$defs": {
+      "A": {
+        "not": true
+      }
+    },
+    "$ref": "#/$defs/A"
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_2019_09, forbid_empty_enum_6) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2019-09/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "$defs": {
+      "A": {
+        "enum": [],
+        "$defs": {
+          "inner": { "type": "string" }
+        }
+      }
+    },
+    "$ref": "#/$defs/A/$defs/inner"
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2019-09/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "$defs": {
+      "A": {
+        "$defs": {
+          "inner": { "type": "string" }
+        },
+        "not": true
+      }
+    },
+    "$ref": "#/$defs/A/$defs/inner"
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_2019_09, forbid_empty_enum_7) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2019-09/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "$defs": {
+      "A": {
+        "$id": "https://example.com/schemas/A",
+        "enum": []
+      }
+    },
+    "$ref": "https://example.com/schemas/A"
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2019-09/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "$defs": {
+      "A": {
+        "$id": "https://example.com/schemas/A",
+        "not": true
+      }
+    },
+    "$ref": "https://example.com/schemas/A"
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_2019_09, forbid_empty_enum_8) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2019-09/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "properties": {
+      "foo": {
+        "x-note": "placeholder",
+        "enum": []
+      }
+    }
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2019-09/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "properties": {
+      "foo": {
+        "x-note": "placeholder",
+        "not": true
+      }
+    }
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
diff --git a/test/alterschema/alterschema_lint_2020_12_test.cc b/test/alterschema/alterschema_lint_2020_12_test.cc
index ba496eff7..c441b4972 100644
--- a/test/alterschema/alterschema_lint_2020_12_test.cc
+++ b/test/alterschema/alterschema_lint_2020_12_test.cc
@@ -9664,3 +9664,451 @@ TEST(AlterSchema_lint_2020_12, object_oneof_required_not_required_6) {
       "can be elevated",
       true);
 }
+
+TEST(AlterSchema_lint_2020_12, forbid_empty_enum_1) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "enum": []
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "not": true
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_2020_12, forbid_empty_enum_2) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "enum": [1, 2]
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "enum": [1, 2]
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_2020_12, forbid_empty_enum_3) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "type": "string"
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "type": "string"
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_2020_12, forbid_empty_enum_4) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "properties": {
+      "foo": {
+        "enum": []
+      }
+    }
+  })JSON");
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "properties": {
+      "foo": {
+        "not": true
+      }
+    }
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_2020_12, forbid_empty_enum_5) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "properties": {
+      "foo": {
+        "enum": []
+      },
+      "bar": {
+        "enum": []
+      },
+      "baz": {
+        "enum": [1, 2]
+      }
+    }
+  })JSON");
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "properties": {
+      "foo": {
+        "not": true
+      },
+      "bar": {
+        "not": true
+      },
+      "baz": {
+        "enum": [1, 2]
+      }
+    }
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_2020_12, forbid_empty_enum_6) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [[]],
+    "prefixItems": [
+      {
+        "enum": []
+      },
+      {
+        "type": "string"
+      }
+    ]
+  })JSON");
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [[]],
+    "prefixItems": [
+      {
+        "not": true
+      },
+      {
+        "type": "string"
+      }
+    ]
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_2020_12, forbid_empty_enum_7) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [[]],
+    "properties": {
+      "arr": {
+        "type": "array",
+        "items": {
+          "x-note": "placeholder",
+          "enum": []
+        }
+      }
+    }
+  })JSON");
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [[]],
+    "properties": {
+      "arr": {
+        "type": "array",
+        "items": {
+          "x-note": "placeholder",
+          "not": true
+        }
+      }
+    }
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_2020_12, forbid_empty_enum_8) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "enum": {}
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "enum": {}
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_2020_12, forbid_empty_enum_9) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "properties": {
+      "foo": {
+        "not": {
+          "enum": []
+        }
+      }
+    }
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "properties": {
+      "foo": {
+        "not": {
+          "not": true
+        }
+      }
+    }
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_2020_12, forbid_empty_enum_10) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "$defs": {
+      "A": {
+        "enum": []
+      }
+    },
+    "$ref": "#/$defs/A"
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "$defs": {
+      "A": {
+        "not": true
+      }
+    },
+    "$ref": "#/$defs/A"
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_2020_12, forbid_empty_enum_11) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "$defs": {
+      "A": {
+        "enum": [],
+        "$defs": {
+          "inner": { "type": "string" }
+        }
+      }
+    },
+    "$ref": "#/$defs/A/$defs/inner"
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "$defs": {
+      "A": {
+        "$defs": {
+          "inner": { "type": "string" }
+        },
+        "not": true
+      }
+    },
+    "$ref": "#/$defs/A/$defs/inner"
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_2020_12, forbid_empty_enum_12) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "$defs": {
+      "A": {
+        "$id": "https://example.com/schemas/A",
+        "enum": []
+      }
+    },
+    "$ref": "https://example.com/schemas/A"
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "$defs": {
+      "A": {
+        "$id": "https://example.com/schemas/A",
+        "not": true
+      }
+    },
+    "$ref": "https://example.com/schemas/A"
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_2020_12, forbid_empty_enum_13) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "properties": {
+      "foo": {
+        "x-note": "placeholder",
+        "enum": []
+      }
+    }
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "properties": {
+      "foo": {
+        "x-note": "placeholder",
+        "not": true
+      }
+    }
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_2020_12, forbid_empty_enum_14) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "not": { "type": "string" },
+    "enum": []
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "not": { "type": "string" },
+    "enum": []
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
diff --git a/test/alterschema/alterschema_lint_draft3_test.cc b/test/alterschema/alterschema_lint_draft3_test.cc
index 69aab7efc..b608808d7 100644
--- a/test/alterschema/alterschema_lint_draft3_test.cc
+++ b/test/alterschema/alterschema_lint_draft3_test.cc
@@ -81,6 +81,34 @@ TEST(AlterSchema_lint_draft3, enum_with_type_4) {
   EXPECT_EQ(document, expected);
 }
 
+TEST(AlterSchema_lint_draft3, forbid_empty_enum_1) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-03/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "properties": {
+      "foo": {
+        "enum": []
+      }
+    }
+  })JSON");
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-03/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "properties": {
+      "foo": {
+        "enum": []
+      }
+    }
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+  EXPECT_EQ(document, expected);
+}
+
 TEST(AlterSchema_lint_draft3, non_applicable_enum_validation_keywords_1) {
   sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
     "$schema": "http://json-schema.org/draft-03/schema#",
diff --git a/test/alterschema/alterschema_lint_draft4_test.cc b/test/alterschema/alterschema_lint_draft4_test.cc
index 6c62d61a6..038954fb5 100644
--- a/test/alterschema/alterschema_lint_draft4_test.cc
+++ b/test/alterschema/alterschema_lint_draft4_test.cc
@@ -1812,7 +1812,7 @@ TEST(AlterSchema_lint_draft4, not_false_4) {
   sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
     "$schema": "http://json-schema.org/draft-04/schema#",
     "type": "string",
-    "not": true
+    "not": {}
   })JSON");
 
   LINT_AND_FIX(document, result, traces);
@@ -1822,7 +1822,7 @@ TEST(AlterSchema_lint_draft4, not_false_4) {
   const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
     "$schema": "http://json-schema.org/draft-04/schema#",
     "type": "string",
-    "not": true
+    "not": {}
   })JSON");
 
   EXPECT_EQ(document, expected);
@@ -2604,3 +2604,97 @@ TEST(AlterSchema_lint_draft4,
 
   EXPECT_EQ(document, expected);
 }
+
+TEST(AlterSchema_lint_draft4, forbid_empty_enum_1) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "enum": []
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "not": {}
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_draft4, forbid_empty_enum_2) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "enum": [1, 2]
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "enum": [1, 2]
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_draft4, forbid_empty_enum_3) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "type": "string"
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "type": "string"
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_draft4, forbid_empty_enum_4) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "properties": {
+      "foo": {
+        "enum": []
+      }
+    }
+  })JSON");
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "properties": {
+      "foo": {
+        "not": {}
+      }
+    }
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+  EXPECT_EQ(document, expected);
+}
diff --git a/test/alterschema/alterschema_lint_draft6_test.cc b/test/alterschema/alterschema_lint_draft6_test.cc
index 6193d80bb..b66a21057 100644
--- a/test/alterschema/alterschema_lint_draft6_test.cc
+++ b/test/alterschema/alterschema_lint_draft6_test.cc
@@ -2929,3 +2929,105 @@ TEST(AlterSchema_lint_draft6, empty_object_as_true_1) {
 
   EXPECT_EQ(document, expected);
 }
+
+TEST(AlterSchema_lint_draft6, forbid_empty_enum_1) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-06/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "enum": []
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-06/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "not": true
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_draft6, forbid_empty_enum_2) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-06/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "enum": [1, 2]
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-06/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "enum": [1, 2]
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_draft6, forbid_empty_enum_3) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-06/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "type": "string"
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-06/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "type": "string"
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_draft6, forbid_empty_enum_4) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-06/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "properties": {
+      "foo": {
+        "enum": []
+      }
+    }
+  })JSON");
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-06/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "properties": {
+      "foo": {
+        "not": true
+      }
+    }
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+  EXPECT_EQ(document, expected);
+}
diff --git a/test/alterschema/alterschema_lint_draft7_test.cc b/test/alterschema/alterschema_lint_draft7_test.cc
index 14b0734c2..fe231ed98 100644
--- a/test/alterschema/alterschema_lint_draft7_test.cc
+++ b/test/alterschema/alterschema_lint_draft7_test.cc
@@ -3507,3 +3507,105 @@ TEST(AlterSchema_lint_draft7,
       "illustrate the expected data",
       false);
 }
+
+TEST(AlterSchema_lint_draft7, forbid_empty_enum_1) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "enum": []
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "not": true
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_draft7, forbid_empty_enum_2) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "enum": [1, 2]
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "enum": [1, 2]
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_draft7, forbid_empty_enum_3) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "type": "string"
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [1],
+    "type": "string"
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_draft7, forbid_empty_enum_4) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "properties": {
+      "foo": {
+        "enum": []
+      }
+    }
+  })JSON");
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "title": "Example",
+    "description": "Example schema",
+    "examples": [{}],
+    "properties": {
+      "foo": {
+        "not": true
+      }
+    }
+  })JSON");
+
+  LINT_AND_FIX(document, result, traces);
+
+  EXPECT_TRUE(result.first);
+  EXPECT_EQ(document, expected);
+}