diff --git a/poetry.lock b/poetry.lock
index 42f9e6c..fe9ec46 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -38,13 +38,13 @@ trio = ["trio (>=0.26.1)"]
 
 [[package]]
 name = "certifi"
-version = "2024.12.14"
+version = "2025.1.31"
 description = "Python package for providing Mozilla's CA Bundle."
 optional = false
 python-versions = ">=3.6"
 files = [
-    {file = "certifi-2024.12.14-py3-none-any.whl", hash = "sha256:1275f7a45be9464efc1173084eaa30f866fe2e47d389406136d332ed4967ec56"},
-    {file = "certifi-2024.12.14.tar.gz", hash = "sha256:b650d30f370c2b724812bee08008be0c4163b163ddaec3f2546c1caf65f191db"},
+    {file = "certifi-2025.1.31-py3-none-any.whl", hash = "sha256:ca78db4565a652026a4db2bcdf68f2fb589ea80d0be70e03929ed730746b84fe"},
+    {file = "certifi-2025.1.31.tar.gz", hash = "sha256:3d5da6925056f6f18f119200434a4780a94263f10d1c21d032a6f6b2baa20651"},
 ]
 
 [[package]]
@@ -249,13 +249,13 @@ testing = ["pytest", "pytest-benchmark"]
 
 [[package]]
 name = "pydantic"
-version = "2.10.5"
+version = "2.10.6"
 description = "Data validation using Python type hints"
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "pydantic-2.10.5-py3-none-any.whl", hash = "sha256:4dd4e322dbe55472cb7ca7e73f4b63574eecccf2835ffa2af9021ce113c83c53"},
-    {file = "pydantic-2.10.5.tar.gz", hash = "sha256:278b38dbbaec562011d659ee05f63346951b3a248a6f3642e1bc68894ea2b4ff"},
+    {file = "pydantic-2.10.6-py3-none-any.whl", hash = "sha256:427d664bf0b8a2b34ff5dd0f5a18df00591adcee7198fbd71981054cef37b584"},
+    {file = "pydantic-2.10.6.tar.gz", hash = "sha256:ca5daa827cce33de7a42be142548b0096bf05a7e7b365aebfa5f8eeec7128236"},
 ]
 
 [package.dependencies]
diff --git a/pyproject.toml b/pyproject.toml
index e44fd59..2afc8d9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@ name = "credal"
 
 [tool.poetry]
 name = "credal"
-version = "0.0.19"
+version = "0.0.20"
 description = ""
 readme = "README.md"
 authors = []
diff --git a/reference.md b/reference.md
index e38eaa1..d9238e2 100644
--- a/reference.md
+++ b/reference.md
@@ -357,6 +357,7 @@ client.copilots.provide_message_feedback(
     message_feedback=MessageFeedback(
         feedback="NEGATIVE",
         suggested_answer="Yes, Credal is SOC 2 compliant.",
+        descriptive_feedback="The response should be extremely clear and concise.",
     ),
 )
 
diff --git a/src/credal/copilots/client.py b/src/credal/copilots/client.py
index 2785f0f..6f18c8a 100644
--- a/src/credal/copilots/client.py
+++ b/src/credal/copilots/client.py
@@ -226,6 +226,7 @@ def provide_message_feedback(
             message_feedback=MessageFeedback(
                 feedback="NEGATIVE",
                 suggested_answer="Yes, Credal is SOC 2 compliant.",
+                descriptive_feedback="The response should be extremely clear and concise.",
             ),
         )
         """
@@ -951,6 +952,7 @@ async def main() -> None:
                 message_feedback=MessageFeedback(
                     feedback="NEGATIVE",
                     suggested_answer="Yes, Credal is SOC 2 compliant.",
+                    descriptive_feedback="The response should be extremely clear and concise.",
                 ),
             )
 
diff --git a/src/credal/copilots/types/message_feedback.py b/src/credal/copilots/types/message_feedback.py
index cf7e63c..aa83e36 100644
--- a/src/credal/copilots/types/message_feedback.py
+++ b/src/credal/copilots/types/message_feedback.py
@@ -12,6 +12,9 @@
 class MessageFeedback(UniversalBaseModel):
     feedback: FeedbackEnum
     suggested_answer: typing_extensions.Annotated[typing.Optional[str], FieldMetadata(alias="suggestedAnswer")] = None
+    descriptive_feedback: typing_extensions.Annotated[
+        typing.Optional[str], FieldMetadata(alias="descriptiveFeedback")
+    ] = None
 
     if IS_PYDANTIC_V2:
         model_config: typing.ClassVar[pydantic.ConfigDict] = pydantic.ConfigDict(extra="allow", frozen=True)  # type: ignore # Pydantic v2
diff --git a/src/credal/core/client_wrapper.py b/src/credal/core/client_wrapper.py
index b757e01..cd54214 100644
--- a/src/credal/core/client_wrapper.py
+++ b/src/credal/core/client_wrapper.py
@@ -22,7 +22,7 @@ def get_headers(self) -> typing.Dict[str, str]:
         headers: typing.Dict[str, str] = {
             "X-Fern-Language": "Python",
             "X-Fern-SDK-Name": "credal",
-            "X-Fern-SDK-Version": "0.0.19",
+            "X-Fern-SDK-Version": "0.0.20",
         }
         headers["Authorization"] = f"Bearer {self._get_api_key()}"
         return headers