ERROR: ResolutionImpossible: Cannot install langgraph==<old> because these package versions have conflicting dependencies

[mdanish-kh]

Checked other resources

• This is a bug, not a usage question. For questions, please use GitHub Discussions.
• I added a clear and detailed title that summarizes the issue.
• I read what a minimal reproducible example is (https://stackoverflow.com/help/minimal-reproducible-example).
• I included a self-contained, minimal example that demonstrates the issue INCLUDING all the relevant imports. The code run AS IS to reproduce the issue.

Example Code

langgraph build -t agent

Requirements.txt for the agent

langgraph==0.3.5
langchain-core==0.3.41
langchain-community==0.3.19
langchain-openai==0.3.7
python-dotenv==1.0.1

Error Message and Stack Trace (if applicable)

#6 [2/7] ADD requirements.txt /deps/__outer_agents/src/requirements.txt
#6 DONE 0.4s

#7 [3/7] RUN PYTHONDONTWRITEBYTECODE=1 pip install --no-cache-dir -c /api/constraints.txt -r /deps/__outer_agents/src/requirements.txt
#7 1.871 ERROR: Cannot install langgraph==0.3.5 because these package versions have conflicting dependencies.
#7 1.872
#7 1.872 The conflict is caused by:
#7 1.872     The user requested langgraph==0.3.5
#7 1.872     The user requested (constraint) langgraph>=0.3.27
#7 1.872
#7 1.872 To fix this you could try to:
#7 1.872 1. loosen the range of package versions you've specified
#7 1.872 2. remove package versions to allow pip attempt to solve the dependency conflict
#7 1.872
#7 1.873 ERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/topics/dependency-resolution/#dealing-with-dependency-conflicts
#7 2.413
#7 2.413 [notice] A new release of pip is available: 24.0 -> 25.1
#7 2.413 [notice] To update, run: pip install --upgrade pip
#7 ERROR: process "/bin/sh -c PYTHONDONTWRITEBYTECODE=1 pip install --no-cache-dir -c /api/constraints.txt -r /deps/__outer_agents/src/requirements.txt" did not complete successfully: exit code: 1
------
 > [3/7] RUN PYTHONDONTWRITEBYTECODE=1 pip install --no-cache-dir -c /api/constraints.txt -r /deps/__outer_agents/src/requirements.txt:
1.872     The user requested (constraint) langgraph>=0.3.27
1.872
1.872 To fix this you could try to:
1.872 1. loosen the range of package versions you've specified
1.872 2. remove package versions to allow pip attempt to solve the dependency conflict
1.872
1.873 ERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/topics/dependency-resolution/#dealing-with-dependency-conflicts
2.413
2.413 [notice] A new release of pip is available: 24.0 -> 25.1
2.413 [notice] To update, run: pip install --upgrade pip
------
Dockerfile:7
--------------------
   5 |     # -- Installing local requirements --
   6 |     ADD requirements.txt /deps/__outer_agents/src/requirements.txt
   7 | >>> RUN PYTHONDONTWRITEBYTECODE=1 pip install --no-cache-dir -c /api/constraints.txt -r /deps/__outer_agents/src/requirements.txt
   8 |     # -- End of local requirements install --
   9 |
--------------------
ERROR: failed to solve: process "/bin/sh -c PYTHONDONTWRITEBYTECODE=1 pip install --no-cache-dir -c /api/constraints.txt -r /deps/__outer_agents/src/requirements.txt" did not complete successfully: exit code: 1
------
 > [3/7] RUN PYTHONDONTWRITEBYTECODE=1 pip install --no-cache-dir -c /api/constraints.txt -r /deps/__outer_agents/src/requirements.txt:
1.872     The user requested (constraint) langgraph>=0.3.27
1.872
1.872 To fix this you could try to:
1.872 1. loosen the range of package versions you've specified
1.872 2. remove package versions to allow pip attempt to solve the dependency conflict
1.872
1.873 ERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/topics/dependency-resolution/#dealing-with-dependency-conflicts
2.413
2.413 [notice] A new release of pip is available: 24.0 -> 25.1
2.413 [notice] To update, run: pip install --upgrade pip
------
Dockerfile:7
--------------------
   5 |     # -- Installing local requirements --
   6 |     ADD requirements.txt /deps/__outer_agents/src/requirements.txt
   7 | >>> RUN PYTHONDONTWRITEBYTECODE=1 pip install --no-cache-dir -c /api/constraints.txt -r /deps/__outer_agents/src/requirements.txt
   8 |     # -- End of local requirements install --
   9 |
--------------------
ERROR: failed to solve: process "/bin/sh -c PYTHONDONTWRITEBYTECODE=1 pip install --no-cache-dir -c /api/constraints.txt -r /deps/__outer_agents/src/requirements.txt" did not complete successfully: exit code: 1

Description

Just got hit with this today when trying to bundle the langgraph code into a docker image using the langgraph build command. It appears to be some sort of breaking change requiring a newer dependency version, which it previously wasn't. I use langgraph 0.3.5 on a remote and local deployment. This is failing on my CI/CD (GitHub actions linux) and also on my local machine running on Windows. Are the older versions deprecated, as I don't see a formal announcement in the release notes?

System Info

System Information

OS: Windows
OS Version: 10.0.26100
Python Version: 3.11.9 (tags/v3.11.9:de54cf5, Apr 2 2024, 10:12:12) [MSC v.1938 64 bit (AMD64)]

Package Information

langchain_core: 0.3.47
langchain: 0.3.21
langchain_community: 0.3.20
langsmith: 0.3.18
langchain_anthropic: 0.3.1
langchain_openai: 0.3.9
langchain_text_splitters: 0.3.7
langgraph_api: 0.0.32
langgraph_cli: 0.1.79
langgraph_license: Installed. No version info available.
langgraph_sdk: 0.1.58
langgraph_storage: Installed. No version info available.

Optional packages not installed

langserve

Other Dependencies

aiohttp<4.0.0,>=3.8.3: Installed. No version info available.
anthropic: 0.42.0
async-timeout<5.0.0,>=4.0.0;: Installed. No version info available.
click: 8.1.7
cryptography: 43.0.3
dataclasses-json<0.7,>=0.5.7: Installed. No version info available.
defusedxml: 0.7.1
httpx: 0.28.1
httpx-sse<1.0.0,>=0.4.0: Installed. No version info available.
jsonpatch<2.0,>=1.33: Installed. No version info available.
jsonschema-rs: 0.25.1
langchain-anthropic;: Installed. No version info available.
langchain-aws;: Installed. No version info available.
langchain-azure-ai;: Installed. No version info available.
langchain-cohere;: Installed. No version info available.
langchain-community;: Installed. No version info available.
langchain-core<1.0.0,>=0.3.45: Installed. No version info available.
langchain-deepseek;: Installed. No version info available.
langchain-fireworks;: Installed. No version info available.
langchain-google-genai;: Installed. No version info available.
langchain-google-vertexai;: Installed. No version info available.
langchain-groq;: Installed. No version info available.
langchain-huggingface;: Installed. No version info available.
langchain-mistralai;: Installed. No version info available.
langchain-ollama;: Installed. No version info available.
langchain-openai;: Installed. No version info available.
langchain-text-splitters<1.0.0,>=0.3.7: Installed. No version info available.
langchain-together;: Installed. No version info available.
langchain-xai;: Installed. No version info available.
langchain<1.0.0,>=0.3.21: Installed. No version info available.
langgraph: 0.3.18
langgraph-checkpoint: 2.0.21
langsmith-pyo3: Installed. No version info available.
langsmith<0.4,>=0.1.125: Installed. No version info available.
langsmith<0.4,>=0.1.17: Installed. No version info available.
numpy<3,>=1.26.2: Installed. No version info available.
openai-agents: Installed. No version info available.
openai<2.0.0,>=1.66.3: Installed. No version info available.
opentelemetry-api: Installed. No version info available.
opentelemetry-exporter-otlp-proto-http: Installed. No version info available.
opentelemetry-sdk: Installed. No version info available.
orjson: 3.10.15
packaging: 24.2
packaging<25,>=23.2: Installed. No version info available.
pydantic: 2.10.6
pydantic-settings<3.0.0,>=2.4.0: Installed. No version info available.
pydantic<3.0.0,>=2.5.2;: Installed. No version info available.
pydantic<3.0.0,>=2.7.4: Installed. No version info available.
pydantic<3.0.0,>=2.7.4;: Installed. No version info available.
pyjwt: 2.10.1
pytest: Installed. No version info available.
python-dotenv: 1.0.1
PyYAML>=5.3: Installed. No version info available.
requests: 2.32.3
requests-toolbelt: 1.0.0
requests<3,>=2: Installed. No version info available.
rich: 13.9.4
SQLAlchemy<3,>=1.4: Installed. No version info available.
sse-starlette: 2.1.3
starlette: 0.45.2
structlog: 24.4.0
tenacity: 9.0.0
tenacity!=8.4.0,<10,>=8.1.0: Installed. No version info available.
tenacity!=8.4.0,<10.0.0,>=8.1.0: Installed. No version info available.
tiktoken<1,>=0.7: Installed. No version info available.
typing-extensions>=4.7: Installed. No version info available.
uvicorn: 0.34.0
watchfiles: 1.0.4
zstandard: 0.23.0

[hinthornw]

Hello! Yes the constrained minbound for langgraph was increased in the 0.2 release of the langgraph-api to take advantage of some more optimizatinos in how we run checkpointing.

If you want to pin against a previous versio of the langraph server, you can pick a versioned image to use.
https://hub.docker.com/r/langchain/langgraph-server/tags

We are working on setting up release notes for the server versions in the upcoming week

[hinthornw]

This isn't a bug so I'm moving to conversations.