diff --git a/platform_neuro_flow_api/api.py b/platform_neuro_flow_api/api.py
index aa504f6..3c5520b 100644
--- a/platform_neuro_flow_api/api.py
+++ b/platform_neuro_flow_api/api.py
@@ -485,12 +485,12 @@ def storage(self) -> Storage:
     @docs(tags=["bakes"], summary="List bakes in given project")
     @query_schema(
         project_id=fields.String(required=True),
-        name=fields.String(missing=None),
-        tags=fields.List(fields.String(), missing=tuple()),
-        since=fields.AwareDateTime(missing=None),
-        until=fields.AwareDateTime(missing=None),
-        reverse=fields.Boolean(missing=False),
-        fetch_last_attempt=fields.Boolean(missing=False),
+        name=fields.String(load_default=None),
+        tags=fields.List(fields.String(), load_default=tuple()),
+        since=fields.AwareDateTime(load_default=None),
+        until=fields.AwareDateTime(load_default=None),
+        reverse=fields.Boolean(load_default=False),
+        fetch_last_attempt=fields.Boolean(load_default=False),
     )
     @response_schema(BakeSchema(many=True), HTTPOk.status_code)
     async def list(
@@ -571,7 +571,7 @@ async def create(
 
     @docs(tags=["bakes"], summary="Get bake by id")
     @query_schema(
-        fetch_last_attempt=fields.Boolean(missing=False),
+        fetch_last_attempt=fields.Boolean(load_default=False),
     )
     @response_schema(BakeSchema(), HTTPOk.status_code)
     async def get(
@@ -593,7 +593,7 @@ async def get(
     @query_schema(
         project_id=fields.String(required=True),
         name=fields.String(required=True),
-        fetch_last_attempt=fields.Boolean(missing=False),
+        fetch_last_attempt=fields.Boolean(load_default=False),
     )
     @response_schema(BakeSchema(), HTTPOk.status_code)
     async def get_by_name(
diff --git a/platform_neuro_flow_api/schema.py b/platform_neuro_flow_api/schema.py
index 8f5b072..059f346 100644
--- a/platform_neuro_flow_api/schema.py
+++ b/platform_neuro_flow_api/schema.py
@@ -75,7 +75,7 @@ class LiveJobSchema(Schema):
     project_id = fields.String(required=True)
     multi = fields.Boolean(required=True)
     tags = fields.List(fields.String(), required=True)
-    raw_id = fields.String(missing="")
+    raw_id = fields.String(load_default="")
 
     @post_load
     def make_live_job_data(self, data: Mapping[str, Any], **kwargs: Any) -> LiveJobData:
@@ -116,8 +116,10 @@ class BakeSchema(Schema):
     id = fields.String(required=True, dump_only=True)
     project_id = fields.String(required=True)
     batch = fields.String(required=True)
-    created_at = fields.AwareDateTime(missing=lambda: datetime.now(timezone.utc))
-    meta = fields.Nested(BakeMetaSchema, required=False, missing=lambda: BakeMeta(None))
+    created_at = fields.AwareDateTime(load_default=lambda: datetime.now(timezone.utc))
+    meta = fields.Nested(
+        BakeMetaSchema, required=False, load_default=lambda: BakeMeta(None)
+    )
     graphs = fields.Dict(
         keys=FullIDField(),
         values=fields.Dict(keys=FullIDField(), values=fields.List(FullIDField())),
@@ -174,7 +176,7 @@ class AttemptSchema(Schema):
     bake_id = fields.String(required=True)
     number = fields.Integer(required=True, strict=True)
     created_at = fields.AwareDateTime(
-        missing=lambda: datetime.now(timezone.utc)
+        load_default=lambda: datetime.now(timezone.utc)
     )  # when
     result = TaskStatusField(required=True)
     configs_meta = fields.Nested(ConfigsMetaSchema(), required=True)
@@ -199,13 +201,13 @@ class TaskSchema(Schema):
     raw_id = fields.String(required=True, allow_none=True)  # empty string for no id
     outputs = fields.Dict(
         allow_none=True,
-        default=None,
+        dump_default=None,
         keys=fields.String(required=True),
         values=fields.String(required=True),
     )
     state = fields.Dict(
         allow_none=True,
-        default=None,
+        dump_default=None,
         keys=fields.String(required=True),
         values=fields.String(required=True),
     )
@@ -230,8 +232,8 @@ class CacheEntrySchema(Schema):
     task_id = FullIDField(required=True)
     batch = fields.String(required=True)
     key = fields.String(required=True)
-    created_at = fields.AwareDateTime(missing=lambda: datetime.now(timezone.utc))
-    raw_id = fields.String(missing="")
+    created_at = fields.AwareDateTime(load_default=lambda: datetime.now(timezone.utc))
+    raw_id = fields.String(load_default="")
     outputs = fields.Dict(values=fields.String(), required=True)
     state = fields.Dict(values=fields.String(), required=True)
 
diff --git a/setup.cfg b/setup.cfg
index 27be41c..a2cead5 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -20,7 +20,7 @@ install_requires =
     neuro-logging==21.12.2
     neuro-sdk==22.1.3
     aiohttp-cors==0.7.0
-    marshmallow==3.12.2
+    marshmallow==3.16.0
     aiohttp-apispec==2.2.3
     markupsafe==2.1.1
     alembic==1.7.7
@@ -42,6 +42,7 @@ asyncio_mode = auto
 filterwarnings=
     error
     ignore::DeprecationWarning:jose
+    ignore::marshmallow.warnings.RemovedInMarshmallow4Warning:apispec.ext.marshmallow.field_converter
 
 [coverage:run]
 branch = True