diff --git a/libs/vertexai/langchain_google_vertexai/model_garden.py b/libs/vertexai/langchain_google_vertexai/model_garden.py
index 07134753..192d2370 100644
--- a/libs/vertexai/langchain_google_vertexai/model_garden.py
+++ b/libs/vertexai/langchain_google_vertexai/model_garden.py
@@ -16,6 +16,7 @@
     Union,
 )
 
+from google.auth.credentials import Credentials
 from langchain_core.callbacks.manager import (
     AsyncCallbackManagerForLLMRun,
     CallbackManagerForLLMRun,
@@ -134,6 +135,7 @@ class ChatAnthropicVertex(_VertexAICommon, BaseChatModel):
     max_output_tokens: int = Field(default=1024, alias="max_tokens")
     access_token: Optional[str] = None
     stream_usage: bool = True  # Whether to include usage metadata in streaming output
+    credentials: Optional[Credentials] = None
 
     class Config:
         """Configuration for this pydantic object."""
@@ -156,12 +158,14 @@ def validate_environment(cls, values: Dict) -> Dict:
             region=values["location"],
             max_retries=values["max_retries"],
             access_token=values["access_token"],
+            credentials=values["credentials"],
         )
         values["async_client"] = AsyncAnthropicVertex(
             project_id=values["project"],
             region=values["location"],
             max_retries=values["max_retries"],
             access_token=values["access_token"],
+            credentials=values["credentials"],
         )
         return values
 
diff --git a/libs/vertexai/poetry.lock b/libs/vertexai/poetry.lock
index 6224639f..7cb590be 100644
--- a/libs/vertexai/poetry.lock
+++ b/libs/vertexai/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.7.1 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.8.3 and should not be changed by hand.
 
 [[package]]
 name = "aiohttp"
@@ -126,13 +126,13 @@ typing-extensions = {version = ">=4.0.0", markers = "python_version < \"3.9\""}
 
 [[package]]
 name = "anthropic"
-version = "0.29.0"
+version = "0.31.2"
 description = "The official Python library for the anthropic API"
 optional = true
 python-versions = ">=3.7"
 files = [
-    {file = "anthropic-0.29.0-py3-none-any.whl", hash = "sha256:d16010715129c8bc3295b74fbf4da73cfb156618bf0abb2d007255983266b76a"},
-    {file = "anthropic-0.29.0.tar.gz", hash = "sha256:3eb558a232d83bdf7cdedb75663bf7ff7a8b50cc10acaa9ce6494ff295b8506a"},
+    {file = "anthropic-0.31.2-py3-none-any.whl", hash = "sha256:28d176b98c72615bfae30f0a9eee6297cc33bf52535d38156fc2805556e2f09b"},
+    {file = "anthropic-0.31.2.tar.gz", hash = "sha256:0134b73df8d1f142fc68675fbadb75e920054e9e3437b99df63f10f0fc6ac26f"},
 ]
 
 [package.dependencies]
@@ -2101,6 +2101,7 @@ files = [
     {file = "PyYAML-6.0.1-cp311-cp311-win_amd64.whl", hash = "sha256:bf07ee2fef7014951eeb99f56f39c9bb4af143d8aa3c21b1677805985307da34"},
     {file = "PyYAML-6.0.1-cp312-cp312-macosx_10_9_x86_64.whl", hash = "sha256:855fb52b0dc35af121542a76b9a84f8d1cd886ea97c84703eaa6d88e37a2ad28"},
     {file = "PyYAML-6.0.1-cp312-cp312-macosx_11_0_arm64.whl", hash = "sha256:40df9b996c2b73138957fe23a16a4f0ba614f4c0efce1e9406a184b6d07fa3a9"},
+    {file = "PyYAML-6.0.1-cp312-cp312-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:a08c6f0fe150303c1c6b71ebcd7213c2858041a7e01975da3a99aed1e7a378ef"},
     {file = "PyYAML-6.0.1-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:6c22bec3fbe2524cde73d7ada88f6566758a8f7227bfbf93a408a9d86bcc12a0"},
     {file = "PyYAML-6.0.1-cp312-cp312-musllinux_1_1_x86_64.whl", hash = "sha256:8d4e9c88387b0f5c7d5f281e55304de64cf7f9c0021a3525bd3b1c542da3b0e4"},
     {file = "PyYAML-6.0.1-cp312-cp312-win32.whl", hash = "sha256:d483d2cdf104e7c9fa60c544d92981f12ad66a457afae824d146093b8c294c54"},
@@ -2767,4 +2768,4 @@ anthropic = ["anthropic"]
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.8.1,<4.0"
-content-hash = "e1900005a8ec866c8818338e3f0293e0592f18bf75b7b051316730ff4d4b5551"
+content-hash = "67590d73d9efefb96a49361cdfa23e6acf4992b878bb741aa35b81b80fbba18a"
diff --git a/libs/vertexai/pyproject.toml b/libs/vertexai/pyproject.toml
index 8e02d749..13f90eff 100644
--- a/libs/vertexai/pyproject.toml
+++ b/libs/vertexai/pyproject.toml
@@ -16,7 +16,7 @@ langchain-core = ">=0.2.9,<0.3"
 google-cloud-aiplatform = "^1.56.0"
 google-cloud-storage = "^2.17.0"
 # optional dependencies
-anthropic = { extras = ["vertexai"], version = ">=0.29.0,<1", optional = true }
+anthropic = { extras = ["vertexai"], version = ">=0.30.0,<1", optional = true }
 
 [tool.poetry.group.test]
 optional = true