diff --git a/.github/workflows/_integration_test.yml b/.github/workflows/_integration_test.yml
index c2d7cb895..1cfdb5fde 100644
--- a/.github/workflows/_integration_test.yml
+++ b/.github/workflows/_integration_test.yml
@@ -4,7 +4,7 @@ on:
   workflow_call:
 
 env:
-  POETRY_VERSION: "1.7.1"
+  POETRY_VERSION: "2.1.2"
 
 jobs:
   build:
@@ -71,4 +71,3 @@ jobs:
         working-directory: libs/cli/js-examples
         run: |
           langgraph build -t langgraph-test-e
-  
\ No newline at end of file
diff --git a/.github/workflows/_lint.yml b/.github/workflows/_lint.yml
index 6d63e11c6..97afe5ed6 100644
--- a/.github/workflows/_lint.yml
+++ b/.github/workflows/_lint.yml
@@ -9,7 +9,7 @@ on:
         description: "From which folder this pipeline executes"
 
 env:
-  POETRY_VERSION: "1.7.1"
+  POETRY_VERSION: "2.1.2"
 
   # This env var allows us to get inline annotations when ruff has complaints.
   RUFF_OUTPUT_FORMAT: github
@@ -50,12 +50,6 @@ jobs:
         working-directory: ${{ inputs.working-directory }}
         run: poetry check
 
-      - name: Check lock file
-        if: steps.changed-files.outputs.all
-        shell: bash
-        working-directory: ${{ inputs.working-directory }}
-        run: poetry check --lock
-
       - name: Install dependencies
         if: steps.changed-files.outputs.all
         # Also installs dev/lint/test/typing dependencies, to ensure we have
diff --git a/.github/workflows/_test.yml b/.github/workflows/_test.yml
index 64dfacd51..85b6ac353 100644
--- a/.github/workflows/_test.yml
+++ b/.github/workflows/_test.yml
@@ -9,7 +9,7 @@ on:
         description: "From which folder this pipeline executes"
 
 env:
-  POETRY_VERSION: "1.7.1"
+  POETRY_VERSION: "2.1.2"
 
 jobs:
   build:
@@ -39,12 +39,6 @@ jobs:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_RO_TOKEN }}
 
-      - name: Check Lock
-        shell: bash
-        working-directory: ${{ inputs.working-directory }}
-        run: |
-          poetry check --lock
-
       - name: Install dependencies
         shell: bash
         working-directory: ${{ inputs.working-directory }}
diff --git a/.github/workflows/_test_langgraph.yml b/.github/workflows/_test_langgraph.yml
index ba1cbd08e..6ff952e79 100644
--- a/.github/workflows/_test_langgraph.yml
+++ b/.github/workflows/_test_langgraph.yml
@@ -4,7 +4,7 @@ on:
   workflow_call:
 
 env:
-  POETRY_VERSION: "1.7.1"
+  POETRY_VERSION: "2.1.2"
 
 jobs:
   build:
diff --git a/.github/workflows/_test_release.yml b/.github/workflows/_test_release.yml
index 46e065d33..21a8c9951 100644
--- a/.github/workflows/_test_release.yml
+++ b/.github/workflows/_test_release.yml
@@ -9,7 +9,7 @@ on:
         description: "From which folder this pipeline executes"
 
 env:
-  POETRY_VERSION: "1.7.1"
+  POETRY_VERSION: "2.1.2"
   PYTHON_VERSION: "3.10"
 
 jobs:
diff --git a/.github/workflows/_test_scheduler_kafka.yml b/.github/workflows/_test_scheduler_kafka.yml
index 1f0edf420..8d0008871 100644
--- a/.github/workflows/_test_scheduler_kafka.yml
+++ b/.github/workflows/_test_scheduler_kafka.yml
@@ -4,7 +4,7 @@ on:
   workflow_call:
 
 env:
-  POETRY_VERSION: "1.7.1"
+  POETRY_VERSION: "2.1.2"
 
 jobs:
   build:
diff --git a/.github/workflows/baseline.yml b/.github/workflows/baseline.yml
index 26a4f2ef0..4f3a33d73 100644
--- a/.github/workflows/baseline.yml
+++ b/.github/workflows/baseline.yml
@@ -8,7 +8,7 @@ on:
       - "libs/**"
 
 env:
-  POETRY_VERSION: "1.7.1"
+  POETRY_VERSION: "2.1.2"
 
 jobs:
   benchmark:
diff --git a/.github/workflows/bench.yml b/.github/workflows/bench.yml
index 0d0fc84b6..1222c4d4e 100644
--- a/.github/workflows/bench.yml
+++ b/.github/workflows/bench.yml
@@ -6,7 +6,7 @@ on:
       - "libs/**"
 
 env:
-  POETRY_VERSION: "1.7.1"
+  POETRY_VERSION: "2.1.2"
 
 jobs:
   benchmark:
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9bed24785..6f359ad67 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,7 +17,7 @@ concurrency:
   cancel-in-progress: true
 
 env:
-  POETRY_VERSION: "1.7.1"
+  POETRY_VERSION: "2.1.2"
 
 jobs:
   changes:
diff --git a/.github/workflows/deploy_docs.yml b/.github/workflows/deploy_docs.yml
index 490169946..ec17db77c 100644
--- a/.github/workflows/deploy_docs.yml
+++ b/.github/workflows/deploy_docs.yml
@@ -10,7 +10,7 @@ on:
   workflow_dispatch:
 
 env:
-  POETRY_VERSION: "1.7.1"
+  POETRY_VERSION: "2.1.2"
 
 permissions:
   contents: read
diff --git a/.github/workflows/link_check.yml b/.github/workflows/link_check.yml
index a42b5fb73..f0d0c35b1 100644
--- a/.github/workflows/link_check.yml
+++ b/.github/workflows/link_check.yml
@@ -12,7 +12,7 @@ on:
   workflow_dispatch:
 
 env:
-  POETRY_VERSION: "1.7.1"
+  POETRY_VERSION: "2.1.2"
 
 jobs:
   markdown-link-check:
@@ -42,8 +42,8 @@ jobs:
 
       - name: Check README.md is in sync
         run: |
-            if ! diff -q README.md libs/langgraph/README.md >/dev/null; then
-            echo "README.md is out of sync with libs/langgraph/README.md"
-            diff -C 3 README.md libs/langgraph/README.md
-            exit 1
-            fi
+          if ! diff -q README.md libs/langgraph/README.md >/dev/null; then
+          echo "README.md is out of sync with libs/langgraph/README.md"
+          diff -C 3 README.md libs/langgraph/README.md
+          exit 1
+          fi
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index c93db70a3..8c1a07085 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -10,7 +10,7 @@ on:
 
 env:
   PYTHON_VERSION: "3.11"
-  POETRY_VERSION: "1.7.1"
+  POETRY_VERSION: "2.1.2"
 
 jobs:
   build:
diff --git a/.github/workflows/run_notebooks.yml b/.github/workflows/run_notebooks.yml
index 16abf71d7..8702f5f3c 100644
--- a/.github/workflows/run_notebooks.yml
+++ b/.github/workflows/run_notebooks.yml
@@ -9,7 +9,7 @@ on:
         type: string
         description: "JSON string of changed files"
   schedule:
-    - cron: '0 13 * * *'
+    - cron: "0 13 * * *"
 
 defaults:
   run:
@@ -30,7 +30,7 @@ jobs:
         uses: "./.github/actions/poetry_setup"
         with:
           python-version: 3.11
-          poetry-version: 1.7.1
+          poetry-version: 2.1.2
           cache-key: test-langgraph-notebooks
 
       - name: Install dependencies