diff --git a/dsp/modules/aws_models.py b/dsp/modules/aws_models.py
index 94b07cad43..34cfff088e 100644
--- a/dsp/modules/aws_models.py
+++ b/dsp/modules/aws_models.py
@@ -148,7 +148,7 @@ def _format_prompt(self, raw_prompt: str) -> str:
         return "<s> [INST] Human: " + raw_prompt + " [/INST] Assistant: "
 
     def _create_body(self, prompt: str, **kwargs) -> tuple[int, dict[str, str | float]]:
-        base_args: dict[str, Any] = self.kwargs
+        base_args: dict[str, Any] = self.kwargs.copy()
         for k, v in kwargs.items():
             base_args[k] = v
 
@@ -211,7 +211,7 @@ def __init__(
             self.kwargs[k] = v
 
     def _create_body(self, prompt: str, **kwargs) -> tuple[int, dict[str, str | float]]:
-        base_args: dict[str, Any] = self.kwargs
+        base_args: dict[str, Any] = self.kwargs.copy()
         for k, v in kwargs.items():
             base_args[k] = v
 
@@ -275,7 +275,7 @@ def __init__(
         self.kwargs["max_gen_len"] = self.kwargs.pop("max_tokens")
 
     def _create_body(self, prompt: str, **kwargs) -> tuple[int, dict[str, str | float]]:
-        base_args: dict[str, Any] = self.kwargs
+        base_args: dict[str, Any] = self.kwargs.copy()
         for k, v in kwargs.items():
             base_args[k] = v