diff --git a/airbyte_cdk/sources/declarative/requesters/request_options/interpolated_request_options_provider.py b/airbyte_cdk/sources/declarative/requesters/request_options/interpolated_request_options_provider.py
index cc961fae7..26f796f36 100644
--- a/airbyte_cdk/sources/declarative/requesters/request_options/interpolated_request_options_provider.py
+++ b/airbyte_cdk/sources/declarative/requesters/request_options/interpolated_request_options_provider.py
@@ -99,9 +99,11 @@ def _resolve_request_body(self) -> None:
         if self.request_body is not None and self.request_body.type is not None:
             if self.request_body.type == "RequestBodyUrlEncodedForm":
                 self.request_body_data = self.request_body.value
+            elif self.request_body.type == "RequestBodyPlainText":
+                self.request_body_data = self.request_body.value
             elif self.request_body.type == "RequestBodyGraphQL":
                 self.request_body_json = self.request_body.value.dict(exclude_none=True)
-            elif self.request_body.type in ("RequestBodyJsonObject", "RequestBodyPlainText"):
+            elif self.request_body.type == "RequestBodyJsonObject":
                 self.request_body_json = self.request_body.value
             else:
                 raise ValueError(f"Unsupported request body type: {self.request_body.type}")
diff --git a/unit_tests/sources/declarative/requesters/request_options/test_interpolated_request_options_provider.py b/unit_tests/sources/declarative/requesters/request_options/test_interpolated_request_options_provider.py
index 786807aa6..2a756adff 100644
--- a/unit_tests/sources/declarative/requesters/request_options/test_interpolated_request_options_provider.py
+++ b/unit_tests/sources/declarative/requesters/request_options/test_interpolated_request_options_provider.py
@@ -211,14 +211,6 @@ def test_interpolated_request_json(test_name, input_request_json, expected_reque
             RequestBodyJsonObject(type="RequestBodyJsonObject", value={"none_value": "{{ None }}"}),
             {},
         ),
-        (
-            "test_string",
-            RequestBodyPlainText(
-                type="RequestBodyPlainText",
-                value="""{"nested": { "key": "{{ config['option'] }}" }}""",
-            ),
-            {"nested": {"key": "OPTION"}},
-        ),
         (
             "test_nested_objects",
             RequestBodyJsonObject(
@@ -345,6 +337,14 @@ def test_interpolated_request_data(test_name, input_request_data, expected_reque
             ),
             {"2020-01-01 - 12345": "ABC"},
         ),
+        (
+            "test_plain_text_body",
+            RequestBodyPlainText(
+                type="RequestBodyPlainText",
+                value="plain text body with {{ config['option'] }}",
+            ),
+            "plain text body with OPTION",
+        ),
     ],
 )
 def test_interpolated_request_data_using_request_body(