diff --git a/libs/checkpoint-postgres/pyproject.toml b/libs/checkpoint-postgres/pyproject.toml
index 72044e179..c8c16e83d 100644
--- a/libs/checkpoint-postgres/pyproject.toml
+++ b/libs/checkpoint-postgres/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "langgraph-checkpoint-postgres"
-version = "3.0.5"
+version = "3.1.0a1"
 description = "Library with a Postgres implementation of LangGraph checkpoint saver."
 authors = []
 requires-python = ">=3.10"
diff --git a/libs/checkpoint-postgres/uv.lock b/libs/checkpoint-postgres/uv.lock
index e1d086215..61d63a50f 100644
--- a/libs/checkpoint-postgres/uv.lock
+++ b/libs/checkpoint-postgres/uv.lock
@@ -259,7 +259,7 @@ wheels = [
 
 [[package]]
 name = "langgraph-checkpoint"
-version = "4.0.3"
+version = "4.1.0a1"
 source = { editable = "../checkpoint" }
 dependencies = [
     { name = "langchain-core" },
@@ -307,7 +307,7 @@ test = [
 
 [[package]]
 name = "langgraph-checkpoint-postgres"
-version = "3.0.5"
+version = "3.1.0a1"
 source = { editable = "." }
 dependencies = [
     { name = "langgraph-checkpoint" },
diff --git a/libs/checkpoint-sqlite/uv.lock b/libs/checkpoint-sqlite/uv.lock
index 9ace53797..22d1931fb 100644
--- a/libs/checkpoint-sqlite/uv.lock
+++ b/libs/checkpoint-sqlite/uv.lock
@@ -268,7 +268,7 @@ wheels = [
 
 [[package]]
 name = "langgraph-checkpoint"
-version = "4.0.3"
+version = "4.1.0a1"
 source = { editable = "../checkpoint" }
 dependencies = [
     { name = "langchain-core" },
diff --git a/libs/checkpoint/pyproject.toml b/libs/checkpoint/pyproject.toml
index 6dd28f2e0..2057681f5 100644
--- a/libs/checkpoint/pyproject.toml
+++ b/libs/checkpoint/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "langgraph-checkpoint"
-version = "4.0.3"
+version = "4.1.0a1"
 description = "Library with base interfaces for LangGraph checkpoint savers."
 authors = []
 requires-python = ">=3.10"
diff --git a/libs/checkpoint/uv.lock b/libs/checkpoint/uv.lock
index 86e7e3c7a..8992d34d5 100644
--- a/libs/checkpoint/uv.lock
+++ b/libs/checkpoint/uv.lock
@@ -286,7 +286,7 @@ wheels = [
 
 [[package]]
 name = "langgraph-checkpoint"
-version = "4.0.3"
+version = "4.1.0a1"
 source = { editable = "." }
 dependencies = [
     { name = "langchain-core" },
diff --git a/libs/langgraph/pyproject.toml b/libs/langgraph/pyproject.toml
index d720c0b3b..8d23f4418 100644
--- a/libs/langgraph/pyproject.toml
+++ b/libs/langgraph/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "langgraph"
-version = "1.1.10"
+version = "1.2.0a1"
 description = "Building stateful, multi-actor applications with LLMs"
 authors = []
 requires-python = ">=3.10"
@@ -25,7 +25,7 @@ classifiers = [
 ]
 dependencies = [
     "langchain-core>=1.3.2,<2",
-    "langgraph-checkpoint>=4.0.3,<5.0.0",
+    "langgraph-checkpoint>=4.1.0a1,<5.0.0",
     "langgraph-sdk>=0.3.0,<0.4.0",
     "langgraph-prebuilt>=1.0.12,<1.1.0",
     "xxhash>=3.5.0",
diff --git a/libs/langgraph/uv.lock b/libs/langgraph/uv.lock
index 9a3ca4cb7..054878b42 100644
--- a/libs/langgraph/uv.lock
+++ b/libs/langgraph/uv.lock
@@ -1380,7 +1380,7 @@ wheels = [
 
 [[package]]
 name = "langgraph"
-version = "1.1.10"
+version = "1.2.0a1"
 source = { editable = "." }
 dependencies = [
     { name = "langchain-core" },
@@ -1561,7 +1561,7 @@ wheels = [
 
 [[package]]
 name = "langgraph-checkpoint"
-version = "4.0.3"
+version = "4.1.0a1"
 source = { editable = "../checkpoint" }
 dependencies = [
     { name = "langchain-core" },
@@ -1609,7 +1609,7 @@ test = [
 
 [[package]]
 name = "langgraph-checkpoint-postgres"
-version = "3.0.5"
+version = "3.1.0a1"
 source = { editable = "../checkpoint-postgres" }
 dependencies = [
     { name = "langgraph-checkpoint" },
diff --git a/libs/prebuilt/uv.lock b/libs/prebuilt/uv.lock
index b781f1176..1a6cbd2f5 100644
--- a/libs/prebuilt/uv.lock
+++ b/libs/prebuilt/uv.lock
@@ -281,7 +281,7 @@ wheels = [
 
 [[package]]
 name = "langgraph"
-version = "1.1.10"
+version = "1.2.0a1"
 source = { editable = "../langgraph" }
 dependencies = [
     { name = "langchain-core" },
@@ -365,7 +365,7 @@ test = [
 
 [[package]]
 name = "langgraph-checkpoint"
-version = "4.0.3"
+version = "4.1.0a1"
 source = { editable = "../checkpoint" }
 dependencies = [
     { name = "langchain-core" },
@@ -413,7 +413,7 @@ test = [
 
 [[package]]
 name = "langgraph-checkpoint-postgres"
-version = "3.0.5"
+version = "3.1.0a1"
 source = { editable = "../checkpoint-postgres" }
 dependencies = [
     { name = "langgraph-checkpoint" },
diff --git a/libs/sdk-py/uv.lock b/libs/sdk-py/uv.lock
index 468451c08..87349cd4e 100644
--- a/libs/sdk-py/uv.lock
+++ b/libs/sdk-py/uv.lock
@@ -298,7 +298,7 @@ wheels = [
 
 [[package]]
 name = "langgraph"
-version = "1.1.10"
+version = "1.2.0a1"
 source = { editable = "../langgraph" }
 dependencies = [
     { name = "langchain-core" },
@@ -382,7 +382,7 @@ test = [
 
 [[package]]
 name = "langgraph-checkpoint"
-version = "4.0.3"
+version = "4.1.0a1"
 source = { editable = "../checkpoint" }
 dependencies = [
     { name = "langchain-core" },