release: Checkpointers 3.0 (#6313)

In this PR:

- Bump `langgraph-checkpoint` to 3.0
- Bump `langgraph-checkpoint-sqlite` to 3.0; Update
`langgraph-checkpoint` deps to >=3,<4
- Bump `langgraph-checkpoint-postgres` to 3.0; Update
`langgraph-checkpoint` max to <4 (keep prior min since the deprecated
functionality wasn't explicitly used)
- Bump `langgraph` to 1.0.1; update `langgraph-checkpoint` max bound to
4
- Bump `prebuilt` to 1.0.1; update `langgraph-checkpoint` max bound to 4

libs/checkpoint-postgres/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "langgraph-checkpoint-postgres"
-version = "2.0.25"
+version = "3.0.0"
 description = "Library with a Postgres implementation of LangGraph checkpoint saver."
 authors = []
 requires-python = ">=3.10"
@@ -12,7 +12,7 @@ readme = "README.md"
 license = "MIT"
 license-files = ['LICENSE']
 dependencies = [
-  "langgraph-checkpoint>=2.1.2,<3.0.0",
+  "langgraph-checkpoint>=2.1.2,<4.0.0",
   "orjson>=3.10.1",
   "psycopg>=3.2.0",
   "psycopg-pool>=3.2.0",

libs/checkpoint-postgres/uv.lock

@@ -1,5 +1,5 @@
 version = 1
-revision = 2
+revision = 3
 requires-python = ">=3.10"
 
 [[package]]
@@ -234,7 +234,7 @@ wheels = [
 
 [[package]]
 name = "langgraph-checkpoint"
-version = "2.1.2"
+version = "3.0.0"
 source = { editable = "../checkpoint" }
 dependencies = [
     { name = "langchain-core" },
@@ -281,7 +281,7 @@ test = [
 
 [[package]]
 name = "langgraph-checkpoint-postgres"
-version = "2.0.25"
+version = "3.0.0"
 source = { editable = "." }
 dependencies = [
     { name = "langgraph-checkpoint" },

libs/checkpoint-sqlite/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "langgraph-checkpoint-sqlite"
-version = "2.0.11"
+version = "3.0.0"
 description = "Library with a SQLite implementation of LangGraph checkpoint saver."
 authors = []
 requires-python = ">=3.10"
@@ -12,7 +12,7 @@ readme = "README.md"
 license = "MIT"
 license-files = ['LICENSE']
 dependencies = [
-    "langgraph-checkpoint>=2.0.21,<3.0.0",
+    "langgraph-checkpoint>=3,<4.0.0",
     "aiosqlite>=0.20",
     "sqlite-vec>=0.1.6",
 ]

libs/checkpoint-sqlite/uv.lock

@@ -1,5 +1,5 @@
 version = 1
-revision = 2
+revision = 3
 requires-python = ">=3.10"
 
 [[package]]
@@ -246,7 +246,7 @@ wheels = [
 
 [[package]]
 name = "langgraph-checkpoint"
-version = "2.1.2"
+version = "3.0.0"
 source = { editable = "../checkpoint" }
 dependencies = [
     { name = "langchain-core" },
@@ -293,7 +293,7 @@ test = [
 
 [[package]]
 name = "langgraph-checkpoint-sqlite"
-version = "2.0.11"
+version = "3.0.0"
 source = { editable = "." }
 dependencies = [
     { name = "aiosqlite" },

libs/checkpoint/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "langgraph-checkpoint"
-version = "2.1.2"
+version = "3.0.0"
 description = "Library with base interfaces for LangGraph checkpoint savers."
 authors = []
 requires-python = ">=3.10"

libs/checkpoint/uv.lock

@@ -1,5 +1,5 @@
 version = 1
-revision = 2
+revision = 3
 requires-python = ">=3.10"
 resolution-markers = [
     "python_full_version >= '3.12'",
@@ -261,7 +261,7 @@ wheels = [
 
 [[package]]
 name = "langgraph-checkpoint"
-version = "2.1.2"
+version = "3.0.0"
 source = { editable = "." }
 dependencies = [
     { name = "langchain-core" },

libs/langgraph/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "langgraph"
-version = "1.0.0"
+version = "1.0.1"
 description = "Building stateful, multi-actor applications with LLMs"
 authors = []
 requires-python = ">=3.10"
@@ -25,7 +25,7 @@ classifiers = [
 ]
 dependencies = [
     "langchain-core>=0.1",
-    "langgraph-checkpoint>=2.1.0,<3.0.0",
+    "langgraph-checkpoint>=2.1.0,<4.0.0",
     "langgraph-sdk>=0.2.2,<0.3.0",
     "langgraph-prebuilt>=1.0.0,<1.1.0",
     "xxhash>=3.5.0",

libs/prebuilt/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "langgraph-prebuilt"
-version = "1.0.0"
+version = "1.0.1"
 description = "Library with high-level APIs for creating and executing LangGraph agents and tools."
 authors = []
 requires-python = ">=3.10"
@@ -24,7 +24,7 @@ classifiers = [
     'Programming Language :: Python :: 3.13',
 ]
 dependencies = [
-    "langgraph-checkpoint>=2.1.0,<3.0.0",
+    "langgraph-checkpoint>=2.1.0,<4.0.0",
     "langchain-core>=0.3.67",
 ]
 

libs/prebuilt/uv.lock

@@ -1,5 +1,5 @@
 version = 1
-revision = 2
+revision = 3
 requires-python = ">=3.10"
 
 [[package]]
@@ -246,7 +246,7 @@ wheels = [
 
 [[package]]
 name = "langgraph"
-version = "1.0.0"
+version = "1.0.1"
 source = { editable = "../langgraph" }
 dependencies = [
     { name = "langchain-core" },
@@ -330,7 +330,7 @@ test = [
 
 [[package]]
 name = "langgraph-checkpoint"
-version = "2.1.2"
+version = "3.0.0"
 source = { editable = "../checkpoint" }
 dependencies = [
     { name = "langchain-core" },
@@ -377,7 +377,7 @@ test = [
 
 [[package]]
 name = "langgraph-checkpoint-postgres"
-version = "2.0.25"
+version = "3.0.0"
 source = { editable = "../checkpoint-postgres" }
 dependencies = [
     { name = "langgraph-checkpoint" },
@@ -424,7 +424,7 @@ test = [
 
 [[package]]
 name = "langgraph-checkpoint-sqlite"
-version = "2.0.11"
+version = "3.0.0"
 source = { editable = "../checkpoint-sqlite" }
 dependencies = [
     { name = "aiosqlite" },
@@ -467,7 +467,7 @@ test = [
 
 [[package]]
 name = "langgraph-prebuilt"
-version = "1.0.0"
+version = "1.0.1"
 source = { editable = "." }
 dependencies = [
     { name = "langchain-core" },