diff --git a/marshmallow_jsonschema/base.py b/marshmallow_jsonschema/base.py
index a8fb726..b75f1ca 100644
--- a/marshmallow_jsonschema/base.py
+++ b/marshmallow_jsonschema/base.py
@@ -54,7 +54,7 @@
     set: {"type": "array"},
     tuple: {"type": "array"},
     float: {"type": "number", "format": "float"},
-    int: {"type": "number", "format": "integer"},
+    int: {"type": "integer"},
     bool: {"type": "boolean"},
     Enum: {"type": "string"},
 }
diff --git a/tests/test_dump.py b/tests/test_dump.py
index ca3f316..50b9fa3 100644
--- a/tests/test_dump.py
+++ b/tests/test_dump.py
@@ -130,7 +130,7 @@ class TestSchema(Schema):
     nested_def = dumped["definitions"]["TestNamedNestedSchema"]
     nested_dmp = dumped["definitions"]["TestSchema"]["properties"]["nested"]
     assert nested_dmp["type"] == "object"
-    assert nested_def["properties"]["foo"]["format"] == "integer"
+    assert nested_def["properties"]["foo"]["type"] == "integer"
 
 
 def test_list():
@@ -198,7 +198,7 @@ class DictSchema(Schema):
     assert "additionalProperties" in nested_json
 
     item_schema = nested_json["additionalProperties"]
-    assert item_schema["type"] == "number"
+    assert item_schema["type"] == "integer"
 
 
 def test_dict_with_nested_value_field():
@@ -531,9 +531,8 @@ class TestSchema(Schema):
     assert dumped["definitions"]["TestSchema"]["properties"]["foo"] == {
         "enum": [v for v in mapping.values()],
         "enumNames": [k for k in mapping.keys()],
-        "format": "integer",
         "title": "foo",
-        "type": "number",
+        "type": "integer",
     }
 
 
@@ -695,7 +694,7 @@ class TestSchema(Schema):
         "type": "object",
         "properties": {
             "field_1": {"type": "string", "title": "field_1"},
-            "field_2": {"type": "number", "title": "field_2", "format": "integer"},
+            "field_2": {"type": "integer", "title": "field_2"},
         },
         "additionalProperties": False,
     }
diff --git a/tests/test_validation.py b/tests/test_validation.py
index 4cac729..c8222bd 100644
--- a/tests/test_validation.py
+++ b/tests/test_validation.py
@@ -198,4 +198,4 @@ class TestSchema(Schema):
 
     foo_property = dumped["definitions"]["TestSchema"]["properties"]["foo"]
     assert {"title": "", "type": "string"} in foo_property["anyOf"]
-    assert {"title": "", "type": "number", "format": "integer"} in foo_property["anyOf"]
+    assert {"title": "", "type": "integer"} in foo_property["anyOf"]