diff --git a/luxonis_train/utils/config.py b/luxonis_train/utils/config.py
index 687dfdd1..2e8460ca 100644
--- a/luxonis_train/utils/config.py
+++ b/luxonis_train/utils/config.py
@@ -63,7 +63,7 @@ class ModelConfig(CustomBaseModel):
     outputs: list[str] = []
 
     @model_validator(mode="after")
-    def check_predefined_model(self):
+    def check_predefined_model(self) -> Self:
         from luxonis_train.utils.registry import MODELS
 
         if self.predefined_model:
@@ -85,7 +85,7 @@ def check_predefined_model(self):
         return self
 
     @model_validator(mode="after")
-    def check_graph(self):
+    def check_graph(self) -> Self:
         from luxonis_train.utils.general import is_acyclic
 
         graph = {node.alias or node.name: node.inputs for node in self.nodes}
@@ -104,7 +104,7 @@ def check_graph(self):
         return self
 
     @model_validator(mode="after")
-    def check_unique_names(self):
+    def check_unique_names(self) -> Self:
         for section, objects in [
             ("nodes", self.nodes),
             ("losses", self.losses),
@@ -165,7 +165,7 @@ class PreprocessingConfig(CustomBaseModel):
     augmentations: list[AugmentationConfig] = []
 
     @model_validator(mode="after")
-    def check_normalize(self):
+    def check_normalize(self) -> Self:
         if self.normalize.active:
             self.augmentations.append(
                 AugmentationConfig(name="Normalize", params=self.normalize.params)
@@ -227,7 +227,7 @@ class TrainerConfig(CustomBaseModel):
     scheduler: SchedulerConfig = SchedulerConfig()
 
     @model_validator(mode="after")
-    def check_num_workes_platform(self):
+    def check_num_workes_platform(self) -> Self:
         if (
             sys.platform == "win32" or sys.platform == "darwin"
         ) and self.num_workers != 0:
@@ -238,7 +238,7 @@ def check_num_workes_platform(self):
         return self
 
     @model_validator(mode="after")
-    def check_validation_interval(self):
+    def check_validation_interval(self) -> Self:
         if self.validation_interval > self.epochs:
             logger.warning(
                 "Setting `validation_interval` same as `epochs` otherwise no checkpoint would be generated."
@@ -272,7 +272,7 @@ class ExportConfig(CustomBaseModel):
     upload_url: str | None = None
 
     @model_validator(mode="after")
-    def check_values(self):
+    def check_values(self) -> Self:
         def pad_values(values: float | list[float] | None):
             if values is None:
                 return None