diff --git a/src/extension/alterschema/CMakeLists.txt b/src/extension/alterschema/CMakeLists.txt
index 74d69b07e..86b093911 100644
--- a/src/extension/alterschema/CMakeLists.txt
+++ b/src/extension/alterschema/CMakeLists.txt
@@ -29,6 +29,7 @@ sourcemeta_library(NAMESPACE sourcemeta PROJECT core NAME alterschema
     linter/dependent_required_tautology.h
     linter/equal_numeric_bounds_to_enum.h
     linter/maximum_real_for_integer.h
+    linter/draft_official_dialect_without_empty_fragment.h
     linter/minimum_real_for_integer.h
     linter/single_type_array.h
     linter/enum_to_const.h
diff --git a/src/extension/alterschema/alterschema.cc b/src/extension/alterschema/alterschema.cc
index 8869201c6..9c7833ca5 100644
--- a/src/extension/alterschema/alterschema.cc
+++ b/src/extension/alterschema/alterschema.cc
@@ -44,6 +44,7 @@ contains_any(const Vocabularies &container,
 #include "linter/dependencies_property_tautology.h"
 #include "linter/dependent_required_default.h"
 #include "linter/dependent_required_tautology.h"
+#include "linter/draft_official_dialect_without_empty_fragment.h"
 #include "linter/duplicate_allof_branches.h"
 #include "linter/duplicate_anyof_branches.h"
 #include "linter/duplicate_enum_values.h"
@@ -84,6 +85,7 @@ auto add(SchemaTransformer &bundle, const AlterSchemaMode mode)
   // Common rules that apply to all modes
   bundle.add<ContentMediaTypeWithoutEncoding>();
   bundle.add<ContentSchemaWithoutMediaType>();
+  bundle.add<DraftOfficialDialectWithoutEmptyFragment>();
   bundle.add<NonApplicableTypeSpecificKeywords>();
   bundle.add<UnnecessaryAllOfWrapperModern>();
   bundle.add<UnnecessaryAllOfWrapperDraft>();
diff --git a/src/extension/alterschema/linter/draft_official_dialect_without_empty_fragment.h b/src/extension/alterschema/linter/draft_official_dialect_without_empty_fragment.h
new file mode 100644
index 000000000..8bf46af7a
--- /dev/null
+++ b/src/extension/alterschema/linter/draft_official_dialect_without_empty_fragment.h
@@ -0,0 +1,44 @@
+class DraftOfficialDialectWithoutEmptyFragment final
+    : public SchemaTransformRule {
+public:
+  DraftOfficialDialectWithoutEmptyFragment()
+      : SchemaTransformRule{"draft_official_dialect_without_empty_fragment",
+                            "The official dialect URI of Draft 7 and older "
+                            "versions must contain the empty fragment"} {};
+
+  [[nodiscard]] auto condition(const sourcemeta::core::JSON &schema,
+                               const sourcemeta::core::JSON &,
+                               const sourcemeta::core::Vocabularies &,
+                               const sourcemeta::core::SchemaFrame &,
+                               const sourcemeta::core::SchemaFrame::Location &,
+                               const sourcemeta::core::SchemaWalker &,
+                               const sourcemeta::core::SchemaResolver &) const
+      -> sourcemeta::core::SchemaTransformRule::Result override {
+    if (!schema.is_object() || !schema.defines("$schema") ||
+        !schema.at("$schema").is_string()) {
+      return false;
+    }
+
+    const auto &schema_value = schema.at("$schema").to_string();
+    return (schema_value == "http://json-schema.org/draft-07/schema" ||
+            schema_value == "http://json-schema.org/draft-07/hyper-schema" ||
+            schema_value == "http://json-schema.org/draft-06/schema" ||
+            schema_value == "http://json-schema.org/draft-06/hyper-schema" ||
+            schema_value == "http://json-schema.org/draft-04/schema" ||
+            schema_value == "http://json-schema.org/draft-04/hyper-schema" ||
+            schema_value == "http://json-schema.org/draft-03/schema" ||
+            schema_value == "http://json-schema.org/draft-03/hyper-schema" ||
+            schema_value == "http://json-schema.org/draft-02/schema" ||
+            schema_value == "http://json-schema.org/draft-02/hyper-schema" ||
+            schema_value == "http://json-schema.org/draft-01/schema" ||
+            schema_value == "http://json-schema.org/draft-01/hyper-schema" ||
+            schema_value == "http://json-schema.org/draft-00/schema" ||
+            schema_value == "http://json-schema.org/draft-00/hyper-schema");
+  }
+
+  auto transform(sourcemeta::core::JSON &schema) const -> void override {
+    auto schema_value = schema.at("$schema").to_string();
+    schema_value += "#";
+    schema.at("$schema").into(sourcemeta::core::JSON{std::move(schema_value)});
+  }
+};
diff --git a/test/alterschema/alterschema_lint_draft0_test.cc b/test/alterschema/alterschema_lint_draft0_test.cc
index 623a634ad..956eac3db 100644
--- a/test/alterschema/alterschema_lint_draft0_test.cc
+++ b/test/alterschema/alterschema_lint_draft0_test.cc
@@ -192,3 +192,19 @@ TEST(AlterSchema_lint_draft0, boolean_true_1) {
 
   EXPECT_EQ(document, expected);
 }
+
+TEST(AlterSchema_lint_draft0, draft_official_dialect_without_empty_fragment_1) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-00/schema",
+    "type": "string"
+  })JSON");
+
+  LINT_AND_FIX_FOR_READABILITY(document);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-00/schema#",
+    "type": "string"
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
diff --git a/test/alterschema/alterschema_lint_draft1_test.cc b/test/alterschema/alterschema_lint_draft1_test.cc
index 1f20ffdc4..350207549 100644
--- a/test/alterschema/alterschema_lint_draft1_test.cc
+++ b/test/alterschema/alterschema_lint_draft1_test.cc
@@ -522,3 +522,19 @@ TEST(AlterSchema_lint_draft1, equal_numeric_bounds_to_enum_2) {
 
   EXPECT_EQ(document, expected);
 }
+
+TEST(AlterSchema_lint_draft1, draft_official_dialect_without_empty_fragment_1) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-01/schema",
+    "type": "string"
+  })JSON");
+
+  LINT_AND_FIX_FOR_READABILITY(document);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-01/schema#",
+    "type": "string"
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
diff --git a/test/alterschema/alterschema_lint_draft2_test.cc b/test/alterschema/alterschema_lint_draft2_test.cc
index 11ad031bc..955815d09 100644
--- a/test/alterschema/alterschema_lint_draft2_test.cc
+++ b/test/alterschema/alterschema_lint_draft2_test.cc
@@ -522,3 +522,19 @@ TEST(AlterSchema_lint_draft2, equal_numeric_bounds_to_enum_2) {
 
   EXPECT_EQ(document, expected);
 }
+
+TEST(AlterSchema_lint_draft2, draft_official_dialect_without_empty_fragment_1) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-02/schema",
+    "type": "string"
+  })JSON");
+
+  LINT_AND_FIX_FOR_READABILITY(document);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-02/schema#",
+    "type": "string"
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
diff --git a/test/alterschema/alterschema_lint_draft3_test.cc b/test/alterschema/alterschema_lint_draft3_test.cc
index 210d322da..11fca2505 100644
--- a/test/alterschema/alterschema_lint_draft3_test.cc
+++ b/test/alterschema/alterschema_lint_draft3_test.cc
@@ -579,3 +579,19 @@ TEST(AlterSchema_lint_draft3, equal_numeric_bounds_to_enum_2) {
 
   EXPECT_EQ(document, expected);
 }
+
+TEST(AlterSchema_lint_draft3, draft_official_dialect_without_empty_fragment_1) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-03/schema",
+    "type": "string"
+  })JSON");
+
+  LINT_AND_FIX_FOR_READABILITY(document);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-03/schema#",
+    "type": "string"
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
diff --git a/test/alterschema/alterschema_lint_draft4_test.cc b/test/alterschema/alterschema_lint_draft4_test.cc
index 121cd4d30..0f92f2fdc 100644
--- a/test/alterschema/alterschema_lint_draft4_test.cc
+++ b/test/alterschema/alterschema_lint_draft4_test.cc
@@ -921,3 +921,19 @@ TEST(AlterSchema_lint_draft4, unnecessary_allof_wrapper_properties_1) {
 
   EXPECT_EQ(document, expected);
 }
+
+TEST(AlterSchema_lint_draft4, draft_official_dialect_without_empty_fragment_1) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-04/schema",
+    "type": "string"
+  })JSON");
+
+  LINT_AND_FIX_FOR_READABILITY(document);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "type": "string"
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
diff --git a/test/alterschema/alterschema_lint_draft6_test.cc b/test/alterschema/alterschema_lint_draft6_test.cc
index 0a85afd5d..0a1413822 100644
--- a/test/alterschema/alterschema_lint_draft6_test.cc
+++ b/test/alterschema/alterschema_lint_draft6_test.cc
@@ -1183,3 +1183,19 @@ TEST(AlterSchema_lint_draft6, unnecessary_allof_wrapper_properties_1) {
 
   EXPECT_EQ(document, expected);
 }
+
+TEST(AlterSchema_lint_draft6, draft_official_dialect_without_empty_fragment_1) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-06/schema",
+    "type": "string"
+  })JSON");
+
+  LINT_AND_FIX_FOR_READABILITY(document);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-06/schema#",
+    "type": "string"
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
diff --git a/test/alterschema/alterschema_lint_draft7_test.cc b/test/alterschema/alterschema_lint_draft7_test.cc
index c4912b494..cabdb9ea4 100644
--- a/test/alterschema/alterschema_lint_draft7_test.cc
+++ b/test/alterschema/alterschema_lint_draft7_test.cc
@@ -1283,3 +1283,53 @@ TEST(AlterSchema_lint_draft7, unnecessary_allof_wrapper_properties_1) {
 
   EXPECT_EQ(document, expected);
 }
+
+TEST(AlterSchema_lint_draft7, draft_official_dialect_without_empty_fragment_1) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-07/schema",
+    "type": "string"
+  })JSON");
+
+  LINT_AND_FIX_FOR_READABILITY(document);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "type": "string"
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_draft7,
+     draft_official_dialect_without_empty_fragment_hyper) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-07/hyper-schema",
+    "type": "string"
+  })JSON");
+
+  LINT_AND_FIX_FOR_READABILITY(document);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-07/hyper-schema#",
+    "type": "string"
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}
+
+TEST(AlterSchema_lint_draft7,
+     draft_official_dialect_without_empty_fragment_already_has_hash) {
+  sourcemeta::core::JSON document = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "type": "string"
+  })JSON");
+
+  LINT_AND_FIX_FOR_READABILITY(document);
+
+  const sourcemeta::core::JSON expected = sourcemeta::core::parse_json(R"JSON({
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "type": "string"
+  })JSON");
+
+  EXPECT_EQ(document, expected);
+}