diff --git a/libs/core/pyproject.toml b/libs/core/pyproject.toml
index 712c5fa3d8602..8ba3b07011ce5 100644
--- a/libs/core/pyproject.toml
+++ b/libs/core/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.poetry]
 name = "langchain-core"
-version = "0.3.20"
+version = "0.3.21"
 description = "Building applications with LLMs through composability"
 authors = []
 license = "MIT"