diff --git a/dspy/predict/langchain.py b/dspy/predict/langchain.py
index 86d439f50c..dda8944f63 100644
--- a/dspy/predict/langchain.py
+++ b/dspy/predict/langchain.py
@@ -9,7 +9,7 @@
 from dspy.predict.parameter import Parameter
 from dspy.predict.predict import Predict
 from dspy.primitives.prediction import Prediction
-from dspy.signatures.field import InputField, OutputField
+from dspy.signatures.field import OldInputField as InputField, OldOutputField as OutputField
 from dspy.signatures.signature import infer_prefix
 
 # TODO: This class is currently hard to test, because it hardcodes gpt-4 usage: