diff --git a/spec/schemas/ism._common.yaml b/spec/schemas/ism._common.yaml
index b608b0d26..8f28d434f 100644
--- a/spec/schemas/ism._common.yaml
+++ b/spec/schemas/ism._common.yaml
@@ -29,7 +29,7 @@ components:
           type: string
         last_updated_time:
           type: integer # TODO: field is strict_date_time||epoch_millis
-          format: int32
+          format: int64
         schema_version:
           type: number
           format: double
@@ -405,7 +405,7 @@ components:
           format: double
         last_updated_time:
           type: integer
-          format: int32
+          format: int64
     RetryIndexRequest:
       type: object
       properties:
diff --git a/tools/tests/linter/fixtures/inline_object_schema_validator/namespaces/ops.yaml b/tools/tests/linter/fixtures/inline_object_schema_validator/namespaces/ops.yaml
index 7332f2ffc..62a749f6f 100644
--- a/tools/tests/linter/fixtures/inline_object_schema_validator/namespaces/ops.yaml
+++ b/tools/tests/linter/fixtures/inline_object_schema_validator/namespaces/ops.yaml
@@ -60,7 +60,6 @@ components:
             type: integer
           bytes:
             type: number
-            format: double
   requestBodies:
     obj:
       content:
diff --git a/tools/tests/linter/fixtures/schemas_validator/anonymous_schemas/namespaces/shelter.yaml b/tools/tests/linter/fixtures/schemas_validator/anonymous_schemas/namespaces/shelter.yaml
index 8045540df..8b40f025a 100644
--- a/tools/tests/linter/fixtures/schemas_validator/anonymous_schemas/namespaces/shelter.yaml
+++ b/tools/tests/linter/fixtures/schemas_validator/anonymous_schemas/namespaces/shelter.yaml
@@ -42,8 +42,7 @@ components:
       name: docket
       in: path
       schema:
-        type: number
-        format: double
+        type: number2
   responses:
     adopt@200:
       content:
diff --git a/tools/tests/merger/fixtures/merger/animals/expected.yaml b/tools/tests/merger/fixtures/merger/animals/expected.yaml
index 34e74b85d..a28b20af2 100644
--- a/tools/tests/merger/fixtures/merger/animals/expected.yaml
+++ b/tools/tests/merger/fixtures/merger/animals/expected.yaml
@@ -72,7 +72,6 @@ components:
       in: path
       schema:
         type: number
-        format: double
     indices.create___path.index:
       name: index
       in: path
diff --git a/tools/tests/merger/fixtures/specs/animals/namespaces/shelter.yaml b/tools/tests/merger/fixtures/specs/animals/namespaces/shelter.yaml
index 1dceb3a68..85398b8ff 100644
--- a/tools/tests/merger/fixtures/specs/animals/namespaces/shelter.yaml
+++ b/tools/tests/merger/fixtures/specs/animals/namespaces/shelter.yaml
@@ -37,7 +37,6 @@ components:
       in: path
       schema:
         type: number
-        format: double
   responses:
     adopt@200:
       application/json: