diff --git a/docutranslate/workflow/docx_workflow.py b/docutranslate/workflow/docx_workflow.py
index aca9daf..8eaaa97 100644
--- a/docutranslate/workflow/docx_workflow.py
+++ b/docutranslate/workflow/docx_workflow.py
@@ -64,7 +64,7 @@ class DocxWorkflow(Workflow[DocxWorkflowConfig, Document, Document], HTMLExporta
         return docu.content
 
     def save_as_html(self, name: str = None, output_dir: Path | str = "./output",
-                     config: Docx2HTMLExporter | None = None) -> Self:
+                     config: Docx2HTMLExporterConfig | None = None) -> Self:
         config = config or self.config.html_exporter_config
         self._save(exporter=Docx2HTMLExporter(config), name=name, output_dir=output_dir)
         return self
diff --git a/docutranslate/workflow/json_workflow.py b/docutranslate/workflow/json_workflow.py
index d374284..6fd0f6f 100644
--- a/docutranslate/workflow/json_workflow.py
+++ b/docutranslate/workflow/json_workflow.py
@@ -61,7 +61,7 @@ class JsonWorkflow(Workflow[JsonWorkflowConfig, Document, Document], HTMLExporta
         return docu.content.decode()
 
     def save_as_html(self, name: str = None, output_dir: Path | str = "./output",
-                     config: Json2HTMLExporter | None = None) -> Self:
+                     config: Json2HTMLExporterConfig | None = None) -> Self:
         config = config or self.config.html_exporter_config
         self._save(exporter=Json2HTMLExporter(config), name=name, output_dir=output_dir)
         return self
diff --git a/docutranslate/workflow/pptx_workflow.py b/docutranslate/workflow/pptx_workflow.py
index ec49001..0ce4c19 100644
--- a/docutranslate/workflow/pptx_workflow.py
+++ b/docutranslate/workflow/pptx_workflow.py
@@ -64,7 +64,7 @@ class PPTXWorkflow(Workflow[PPTXWorkflowConfig, Document, Document], HTMLExporta
         return docu.content
 
     def save_as_html(self, name: str = None, output_dir: Path | str = "./output",
-                     config: PPTX2HTMLExporter | None = None) -> Self:
+                     config: PPTX2HTMLExporterConfig | None = None) -> Self:
         config = config or self.config.html_exporter_config
         self._save(exporter=PPTX2HTMLExporter(config), name=name, output_dir=output_dir)
         return self
diff --git a/docutranslate/workflow/xlsx_workflow.py b/docutranslate/workflow/xlsx_workflow.py
index ae3f06d..4a48cca 100644
--- a/docutranslate/workflow/xlsx_workflow.py
+++ b/docutranslate/workflow/xlsx_workflow.py
@@ -90,7 +90,7 @@ class XlsxWorkflow(Workflow[XlsxWorkflowConfig, Document, Document], HTMLExporta
         return docu.content
 
     def save_as_html(self, name: str = None, output_dir: Path | str = "./output",
-                     config: Xlsx2HTMLExporter | None = None) -> Self:
+                     config: Xlsx2HTMLExporterConfig | None = None) -> Self:
         config = config or self.config.html_exporter_config
         self._save(exporter=Xlsx2HTMLExporter(config), name=name, output_dir=output_dir)
         return self