diff --git a/libs/checkpoint-postgres/langgraph/checkpoint/postgres/__init__.py b/libs/checkpoint-postgres/langgraph/checkpoint/postgres/__init__.py
index 3b33e0a9f..87241259c 100644
--- a/libs/checkpoint-postgres/langgraph/checkpoint/postgres/__init__.py
+++ b/libs/checkpoint-postgres/langgraph/checkpoint/postgres/__init__.py
@@ -323,8 +323,14 @@ class PostgresSaver(BasePostgresSaver):
                                 k: v
                                 for k, v in config["configurable"].items()
                                 if not k.startswith("__")
+                                and isinstance(v, (str, int, bool, float))
+                            },
+                            **{
+                                k: v
+                                for k, v in config.get("metadata", {}).items()
+                                if not k.startswith("__")
+                                and isinstance(v, (str, int, bool, float))
                             },
-                            **config.get("metadata", {}),
                             **metadata,
                         }
                     ),
diff --git a/libs/checkpoint-postgres/langgraph/checkpoint/postgres/aio.py b/libs/checkpoint-postgres/langgraph/checkpoint/postgres/aio.py
index 596ce1de5..abfeb8a60 100644
--- a/libs/checkpoint-postgres/langgraph/checkpoint/postgres/aio.py
+++ b/libs/checkpoint-postgres/langgraph/checkpoint/postgres/aio.py
@@ -281,8 +281,14 @@ class AsyncPostgresSaver(BasePostgresSaver):
                                 k: v
                                 for k, v in config["configurable"].items()
                                 if not k.startswith("__")
+                                and isinstance(v, (str, int, bool, float))
+                            },
+                            **{
+                                k: v
+                                for k, v in config.get("metadata", {}).items()
+                                if not k.startswith("__")
+                                and isinstance(v, (str, int, bool, float))
                             },
-                            **config.get("metadata", {}),
                             **metadata,
                         }
                     ),
diff --git a/libs/checkpoint-postgres/langgraph/checkpoint/postgres/shallow.py b/libs/checkpoint-postgres/langgraph/checkpoint/postgres/shallow.py
index decf25bfd..53c092e68 100644
--- a/libs/checkpoint-postgres/langgraph/checkpoint/postgres/shallow.py
+++ b/libs/checkpoint-postgres/langgraph/checkpoint/postgres/shallow.py
@@ -429,8 +429,14 @@ class ShallowPostgresSaver(BasePostgresSaver):
                                 k: v
                                 for k, v in config["configurable"].items()
                                 if not k.startswith("__")
+                                and isinstance(v, (str, int, bool, float))
+                            },
+                            **{
+                                k: v
+                                for k, v in config.get("metadata", {}).items()
+                                if not k.startswith("__")
+                                and isinstance(v, (str, int, bool, float))
                             },
-                            **config.get("metadata", {}),
                             **metadata,
                         }
                     ),
@@ -758,8 +764,14 @@ class AsyncShallowPostgresSaver(BasePostgresSaver):
                                 k: v
                                 for k, v in config["configurable"].items()
                                 if not k.startswith("__")
+                                and isinstance(v, (str, int, bool, float))
+                            },
+                            **{
+                                k: v
+                                for k, v in config.get("metadata", {}).items()
+                                if not k.startswith("__")
+                                and isinstance(v, (str, int, bool, float))
                             },
-                            **config.get("metadata", {}),
                             **metadata,
                         }
                     ),
diff --git a/libs/checkpoint-postgres/pyproject.toml b/libs/checkpoint-postgres/pyproject.toml
index 32b56f089..3bf01d676 100644
--- a/libs/checkpoint-postgres/pyproject.toml
+++ b/libs/checkpoint-postgres/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "langgraph-checkpoint-postgres"
-version = "2.0.14"
+version = "2.0.15"
 description = "Library with a Postgres implementation of LangGraph checkpoint saver."
 authors = []
 license = "MIT"
diff --git a/libs/checkpoint-sqlite/langgraph/checkpoint/sqlite/__init__.py b/libs/checkpoint-sqlite/langgraph/checkpoint/sqlite/__init__.py
index 2587a70b4..6dfa876d5 100644
--- a/libs/checkpoint-sqlite/langgraph/checkpoint/sqlite/__init__.py
+++ b/libs/checkpoint-sqlite/langgraph/checkpoint/sqlite/__init__.py
@@ -402,9 +402,13 @@ class SqliteSaver(BaseCheckpointSaver[str]):
                 **{
                     k: v
                     for k, v in config["configurable"].items()
-                    if not k.startswith("__")
+                    if not k.startswith("__") and isinstance(v, (str, int, bool, float))
+                },
+                **{
+                    k: v
+                    for k, v in config.get("metadata", {}).items()
+                    if not k.startswith("__") and isinstance(v, (str, int, bool, float))
                 },
-                **config.get("metadata", {}),
                 **metadata,
             }
         )
diff --git a/libs/checkpoint-sqlite/langgraph/checkpoint/sqlite/aio.py b/libs/checkpoint-sqlite/langgraph/checkpoint/sqlite/aio.py
index 338ce0e47..e4862c130 100644
--- a/libs/checkpoint-sqlite/langgraph/checkpoint/sqlite/aio.py
+++ b/libs/checkpoint-sqlite/langgraph/checkpoint/sqlite/aio.py
@@ -468,9 +468,13 @@ class AsyncSqliteSaver(BaseCheckpointSaver[str]):
                 **{
                     k: v
                     for k, v in config["configurable"].items()
-                    if not k.startswith("__")
+                    if not k.startswith("__") and isinstance(v, (str, int, bool, float))
+                },
+                **{
+                    k: v
+                    for k, v in config.get("metadata", {}).items()
+                    if not k.startswith("__") and isinstance(v, (str, int, bool, float))
                 },
-                **config.get("metadata", {}),
                 **metadata,
             }
         )
diff --git a/libs/checkpoint-sqlite/pyproject.toml b/libs/checkpoint-sqlite/pyproject.toml
index 50150b471..1eeeeed3a 100644
--- a/libs/checkpoint-sqlite/pyproject.toml
+++ b/libs/checkpoint-sqlite/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "langgraph-checkpoint-sqlite"
-version = "2.0.4"
+version = "2.0.5"
 description = "Library with a SQLite implementation of LangGraph checkpoint saver."
 authors = []
 license = "MIT"
diff --git a/libs/checkpoint/langgraph/checkpoint/memory/__init__.py b/libs/checkpoint/langgraph/checkpoint/memory/__init__.py
index 855ced952..e7b81d324 100644
--- a/libs/checkpoint/langgraph/checkpoint/memory/__init__.py
+++ b/libs/checkpoint/langgraph/checkpoint/memory/__init__.py
@@ -362,8 +362,14 @@ class InMemorySaver(
                                 k: v
                                 for k, v in config["configurable"].items()
                                 if not k.startswith("__")
+                                and isinstance(v, (str, int, bool, float))
+                            },
+                            **{
+                                k: v
+                                for k, v in config.get("metadata", {}).items()
+                                if not k.startswith("__")
+                                and isinstance(v, (str, int, bool, float))
                             },
-                            **config.get("metadata", {}),
                             **metadata,
                         }
                     ),
diff --git a/libs/checkpoint/pyproject.toml b/libs/checkpoint/pyproject.toml
index 10ebf1a24..2f137faad 100644
--- a/libs/checkpoint/pyproject.toml
+++ b/libs/checkpoint/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "langgraph-checkpoint"
-version = "2.0.14"
+version = "2.0.15"
 description = "Library with base interfaces for LangGraph checkpoint savers."
 authors = []
 license = "MIT"