diff --git a/libs/core/langchain_core/_api/deprecation.py b/libs/core/langchain_core/_api/deprecation.py
index 970cfa569463b..52c4e9c8dfa1b 100644
--- a/libs/core/langchain_core/_api/deprecation.py
+++ b/libs/core/langchain_core/_api/deprecation.py
@@ -257,10 +257,12 @@ def finalize(  # type: ignore
             addendum,
         ]
         details = " ".join([component.strip() for component in components if component])
+        package = _name.split(".")[0].replace("_", "-") if "." in _name else None
+        since_str = f"{package}=={since}" if package else since
         new_doc = (
             f"[*Deprecated*] {old_doc}\n"
             f"{notes_header if notes_header not in old_doc else ''}\n"
-            f".. deprecated:: {since}\n"
+            f".. deprecated:: {since_str}\n"
             f"   {details}"
         )