diff --git a/libs/partners/anthropic/pyproject.toml b/libs/partners/anthropic/pyproject.toml
index 7eb22a60be2..8d0d7bc9fb2 100644
--- a/libs/partners/anthropic/pyproject.toml
+++ b/libs/partners/anthropic/pyproject.toml
@@ -8,11 +8,11 @@ license = { text = "MIT" }
 requires-python = ">=3.10.0,<4.0.0"
 dependencies = [
     "anthropic>=0.69.0,<1.0.0",
-    "langchain-core>=1.0.0a7,<2.0.0",
+    "langchain-core>=1.0.0a8,<2.0.0",
     "pydantic>=2.7.4,<3.0.0",
 ]
 name = "langchain-anthropic"
-version = "1.0.0a3"
+version = "1.0.0a4"
 description = "Integration package connecting Claude (Anthropic) APIs and LangChain"
 readme = "README.md"
 
diff --git a/libs/partners/anthropic/uv.lock b/libs/partners/anthropic/uv.lock
index c8fee5e9780..879d8c85916 100644
--- a/libs/partners/anthropic/uv.lock
+++ b/libs/partners/anthropic/uv.lock
@@ -1,5 +1,5 @@
 version = 1
-revision = 3
+revision = 2
 requires-python = ">=3.10.0, <4.0.0"
 resolution-markers = [
     "python_full_version >= '3.13' and platform_python_implementation == 'PyPy'",
@@ -419,7 +419,7 @@ wheels = [
 
 [[package]]
 name = "langchain-anthropic"
-version = "1.0.0a3"
+version = "1.0.0a4"
 source = { editable = "." }
 dependencies = [
     { name = "anthropic" },