diff --git a/src/diffusers/modular_pipelines/modular_pipeline.py b/src/diffusers/modular_pipelines/modular_pipeline.py
index 8d85d60cd1..76a850b63c 100644
--- a/src/diffusers/modular_pipelines/modular_pipeline.py
+++ b/src/diffusers/modular_pipelines/modular_pipeline.py
@@ -724,7 +724,7 @@ class ConditionalPipelineBlocks(ModularPipelineBlocks):
             logger.error(error_msg)
             raise
 
-    def get_execution_blocks(self, **kwargs) -> "ModularPipelineBlocks" | None:
+    def get_execution_blocks(self, **kwargs) -> ModularPipelineBlocks | None:
         """
         Get the block(s) that would execute given the inputs.