diff --git a/libs/partners/openai/pyproject.toml b/libs/partners/openai/pyproject.toml
index e463539a4ba..920139c7558 100644
--- a/libs/partners/openai/pyproject.toml
+++ b/libs/partners/openai/pyproject.toml
@@ -20,10 +20,10 @@ classifiers = [
     "Topic :: Scientific/Engineering :: Artificial Intelligence",
 ]
 
-version = "1.1.11"
+version = "1.1.12"
 requires-python = ">=3.10.0,<4.0.0"
 dependencies = [
-    "langchain-core>=1.2.18,<2.0.0",
+    "langchain-core>=1.2.20,<2.0.0",
     "openai>=2.26.0,<3.0.0",
     "tiktoken>=0.7.0,<1.0.0",
 ]
diff --git a/libs/partners/openai/tests/cassettes/test_tool_search_streaming.yaml.gz b/libs/partners/openai/tests/cassettes/test_tool_search_streaming.yaml.gz
index e094d1272a5..3a056a809b4 100644
Binary files a/libs/partners/openai/tests/cassettes/test_tool_search_streaming.yaml.gz and b/libs/partners/openai/tests/cassettes/test_tool_search_streaming.yaml.gz differ
diff --git a/libs/partners/openai/uv.lock b/libs/partners/openai/uv.lock
index 3eb1ed90d23..ad34a098a1a 100644
--- a/libs/partners/openai/uv.lock
+++ b/libs/partners/openai/uv.lock
@@ -671,7 +671,7 @@ typing = [
 
 [[package]]
 name = "langchain-openai"
-version = "1.1.11"
+version = "1.1.12"
 source = { editable = "." }
 dependencies = [
     { name = "langchain-core" },