diff --git a/.coveragerc b/.coveragerc
new file mode 100644
index 00000000..982c440d
--- /dev/null
+++ b/.coveragerc
@@ -0,0 +1,8 @@
+[run]
+branch = true
+omit =
+    */__init__.py
+
+[report]
+show_missing = true
+fail_under = 83
\ No newline at end of file
diff --git a/.github/blunderbuss.yml b/.github/blunderbuss.yml
new file mode 100644
index 00000000..cedea1bf
--- /dev/null
+++ b/.github/blunderbuss.yml
@@ -0,0 +1,4 @@
+assign_issues:
+  - googleapis/langchain-csql-pg
+assign_prs:
+  - googleapis/langchain-csql-pg
diff --git a/.github/header-checker-lint.yml b/.github/header-checker-lint.yml
index 73f01db0..448c4c2e 100644
--- a/.github/header-checker-lint.yml
+++ b/.github/header-checker-lint.yml
@@ -11,6 +11,7 @@ sourceFileExtensions:
   - "py"
   - "text"
 ignoreFiles:
+  - ".github/blunderbuss.yml"
   - ".github/release-please.yml"
   - ".github/release-trigger.yml"
   - ".github/header-checker-lint.yml"
diff --git a/.kokoro/requirements.txt b/.kokoro/requirements.txt
index c2ce28db..7eb2ec20 100644
--- a/.kokoro/requirements.txt
+++ b/.kokoro/requirements.txt
@@ -273,10 +273,12 @@ jaraco-classes==3.3.1 \
 jeepney==0.8.0 \
     --hash=sha256:5efe48d255973902f6badc3ce55e2aa6c5c3b3bc642059ef3a91247bcfcc5806 \
     --hash=sha256:c0a454ad016ca575060802ee4d590dd912e35c122fa04e70306de3d076cce755
-    # via secretstorage
-jinja2==3.1.3 \
-    --hash=sha256:7d6d50dd97d52cbc355597bd845fabfbac3f551e1f99619e39a35ce8c370b5fa \
-    --hash=sha256:ac8bd6544d4bb2c9792bf3a159e80bba8fda7f07e81bc3aed565432d5925ba90
+    # via
+    #   keyring
+    #   secretstorage
+jinja2==3.1.4 \
+    --hash=sha256:4a3aee7acbbe7303aede8e9648d13b8bf88a429282aa6122a993f0ac800cb369 \
+    --hash=sha256:bc5dd2abb727a5319567b7a813e6a2e7318c39f4f487cfe6c89c6f9c7d25197d
     # via gcp-releasetool
 keyring==24.3.1 \
     --hash=sha256:c3327b6ffafc0e8befbdb597cacdb4928ffe5c1212f7645f186e6d9957a898db \
@@ -451,9 +453,9 @@ readme-renderer==42.0 \
     --hash=sha256:13d039515c1f24de668e2c93f2e877b9dbe6c6c32328b90a40a49d8b2b85f36d \
     --hash=sha256:2d55489f83be4992fe4454939d1a051c33edbab778e82761d060c9fc6b308cd1
     # via twine
-requests==2.31.0 \
-    --hash=sha256:58cd2187c01e70e6e26505bca751777aa9f2ee0b7f4300988b709f44e013003f \
-    --hash=sha256:942c5a758f98d790eaed1a29cb6eefc7ffb0d1cf7af05c3d2791656dbd6ad1e1
+requests==2.32.0 \
+    --hash=sha256:f2c3881dddb70d056c5bd7600a4fae312b2a300e39be6a118d30b90bd27262b5 \
+    --hash=sha256:fa5490319474c82ef1d2c9bc459d3652e3ae4ef4c4ebdd18a21145a47ca4b6b8
     # via
     #   gcp-releasetool
     #   google-api-core
@@ -479,7 +481,9 @@ rsa==4.9 \
 secretstorage==3.3.3 \
     --hash=sha256:2403533ef369eca6d2ba81718576c5e0f564d5cca1b58f73a8b23e7d4eeebd77 \
     --hash=sha256:f356e6628222568e3af06f2eba8df495efa13b3b63081dafd4f7d9a7b7bc9f99
-    # via -r requirements.in
+    # via
+    #   -r requirements.in
+    #   keyring
 six==1.16.0 \
     --hash=sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926 \
     --hash=sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 739a7fae..51cc3777 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.5.0](https://github.com/googleapis/langchain-google-cloud-sql-pg-python/compare/v0.4.1...v0.5.0) (2024-05-30)
+
+
+### Features
+
+* Support LangChain v0.2 ([#133](https://github.com/googleapis/langchain-google-cloud-sql-pg-python/issues/133)) ([4364a04](https://github.com/googleapis/langchain-google-cloud-sql-pg-python/commit/4364a04bece61ab16f29cc37900dd79edc2128e2))
+
 ## [0.4.1](https://github.com/googleapis/langchain-google-cloud-sql-pg-python/compare/v0.4.0...v0.4.1) (2024-05-02)
 
 
diff --git a/DEVELOPER.md b/DEVELOPER.md
index 3cb0d40b..4118a0da 100644
--- a/DEVELOPER.md
+++ b/DEVELOPER.md
@@ -59,7 +59,7 @@ substitutions:
   _VERSION: "3.8"
 ```
 
-Use `gcloud builds triggers import --source=trigger.yaml` create triggers via the command line
+Use `gcloud builds triggers import --source=trigger.yaml` to create triggers via the command line
 
 #### Project Setup
 
@@ -78,6 +78,18 @@ Use `gcloud builds triggers import --source=trigger.yaml` create triggers via th
 
 To run Cloud Build tests on GitHub from external contributors, ie RenovateBot, comment: `/gcbrun`.
 
+#### Code Coverage
+Please make sure your code is fully tested. The Cloud Build integration tests are run with the `pytest-cov` code coverage plugin. They fail for PRs with a code coverage less than the threshold specified in `.coveragerc`.  If your file is inside the main module and should be ignored by code coverage check, add it to the `omit` section of `.coveragerc`.
+
+Check for code coverage report in any Cloud Build integration test log. 
+Here is a breakdown of the report:
+- `Stmts`:  lines of executable code (statements).
+- `Miss`: number of lines not covered by tests.
+- `Branch`: branches of executable code (e.g an if-else clause may count as 1 statement but 2 branches; test for both conditions to have both branches covered).
+- `BrPart`: number of branches not covered by tests.
+- `Cover`: average coverage of files.
+- `Missing`: lines that are not covered by tests.
+
 ## Documentation
 
 ### LangChain Integration Docs
diff --git a/integration.cloudbuild.yaml b/integration.cloudbuild.yaml
index b375ada7..26a29290 100644
--- a/integration.cloudbuild.yaml
+++ b/integration.cloudbuild.yaml
@@ -26,7 +26,7 @@ steps:
   - id: Run integration tests
     name: python:${_VERSION}
     entrypoint: python
-    args: ["-m", "pytest"]
+    args: ["-m", "pytest", "--cov=langchain_google_cloud_sql_pg", "--cov-config=.coveragerc", "tests/"]
     env:
       - "PROJECT_ID=$PROJECT_ID"
       - "INSTANCE_ID=$_INSTANCE_ID"
diff --git a/pyproject.toml b/pyproject.toml
index 7caffb57..378a771c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,9 +11,10 @@ authors = [
 
 dependencies = [
     "cloud-sql-python-connector[asyncpg] >= 1.7.0, <2.0.0",
-    "langchain-core>=0.1.1, <2.0.0 ",
-    "langchain-community>=0.0.18, <0.1.0",
-    "numpy>=1.24.4, <2.0.0",
+    "langchain-core>=0.1.1, <1.0.0 ",
+    "langchain-community>=0.0.18, <0.3.0",
+    "numpy==1.24.4; python_version<='3.8'",
+    "numpy>=1.24.4, <2.0.0; python_version>'3.8'",
     "pgvector>=0.2.5, <1.0.0",
     "SQLAlchemy[asyncio]>=2.0.25, <3.0.0"
 ]
@@ -43,9 +44,10 @@ Changelog = "https://github.com/googleapis/langchain-google-cloud-sql-pg-python/
 test = [
     "black[jupyter]==23.12.1",
     "isort==5.13.2",
-    "mypy==1.9.0",
-    "pytest-asyncio==0.23.5.post1",
-    "pytest==7.4.4"
+    "mypy==1.10.0",
+    "pytest-asyncio==0.23.7",
+    "pytest==7.4.4",
+    "pytest-cov==5.0.0"
 ]
 
 [build-system]
diff --git a/requirements.txt b/requirements.txt
index ebb83631..db27ab05 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
-cloud-sql-python-connector[asyncpg]==1.8.0
-langchain-core==0.1.35
-langchain-community==0.0.28
-numpy==1.24.4; python_version<='3.8'
+cloud-sql-python-connector[asyncpg]==1.9.2
+langchain-core==0.2.2
+langchain-community==0.2.1
+numpy===1.24.4; python_version<='3.8'
 numpy==1.26.4; python_version>'3.8'
 pgvector==0.2.5
-SQLAlchemy[asyncio]==2.0.28
+SQLAlchemy[asyncio]==2.0.30
diff --git a/src/langchain_google_cloud_sql_pg/version.py b/src/langchain_google_cloud_sql_pg/version.py
index 2ebf21c0..4f5353ed 100644
--- a/src/langchain_google_cloud_sql_pg/version.py
+++ b/src/langchain_google_cloud_sql_pg/version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "0.4.1"
+__version__ = "0.5.0"