diff --git a/libs/langchain/langchain/chat_models/base.py b/libs/langchain/langchain/chat_models/base.py
index 6a56418f13e..e76f33c9ad3 100644
--- a/libs/langchain/langchain/chat_models/base.py
+++ b/libs/langchain/langchain/chat_models/base.py
@@ -473,6 +473,7 @@ _SUPPORTED_PROVIDERS = {
     "google_anthropic_vertex",
     "deepseek",
     "ibm",
+    "xai",
 }
 
 
diff --git a/libs/langchain/pyproject.toml b/libs/langchain/pyproject.toml
index db07bcd6aba..277c05349e3 100644
--- a/libs/langchain/pyproject.toml
+++ b/libs/langchain/pyproject.toml
@@ -7,7 +7,7 @@ authors = []
 license = { text = "MIT" }
 requires-python = "<4.0,>=3.9"
 dependencies = [
-    "langchain-core<1.0.0,>=0.3.34",
+    "langchain-core<1.0.0,>=0.3.35",
     "langchain-text-splitters<1.0.0,>=0.3.6",
     "langsmith<0.4,>=0.1.17",
     "pydantic<3.0.0,>=2.7.4",
@@ -21,7 +21,7 @@ dependencies = [
     "async-timeout<5.0.0,>=4.0.0; python_version < \"3.11\"",
 ]
 name = "langchain"
-version = "0.3.18"
+version = "0.3.19"
 description = "Building applications with LLMs through composability"
 readme = "README.md"
 
diff --git a/libs/langchain/uv.lock b/libs/langchain/uv.lock
index 57b17737da8..4faddbebc50 100644
--- a/libs/langchain/uv.lock
+++ b/libs/langchain/uv.lock
@@ -2240,7 +2240,7 @@ wheels = [
 
 [[package]]
 name = "langchain"
-version = "0.3.18"
+version = "0.3.19"
 source = { editable = "." }
 dependencies = [
     { name = "aiohttp" },