diff --git a/db.Dockerfile b/db.Dockerfile
new file mode 100644
index 0000000000..99db7497fb
--- /dev/null
+++ b/db.Dockerfile
@@ -0,0 +1,11 @@
+FROM postgres:16-alpine3.24
+
+# Install pgvector extension https://github.com/pgvector/pgvector#installation
+RUN apk add --no-cache --virtual .build-deps \
+    git build-base clang21 llvm21 && \
+    cd /tmp && \
+    git clone --branch v0.8.6 https://github.com/pgvector/pgvector.git && \
+    cd pgvector && \
+    make && \
+    make install && \
+    apk del .build-deps
diff --git a/docker-compose.yml b/docker-compose.yml
index f72af94504..592953a738 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -56,7 +56,9 @@ services:
       - spark
       - test
       - usaspending
-    image: postgres:16-alpine
+    build:
+      context: .
+      dockerfile: db.Dockerfile
     healthcheck:
       test: [ "CMD-SHELL", "pg_isready -U ${USASPENDING_DB_USER} -d ${USASPENDING_DB_NAME}" ]
       interval: 5s
diff --git a/pyproject.toml b/pyproject.toml
index 1be1e8536a..d43f2f0b73 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -49,6 +49,7 @@ dependencies = [
     "numpy==1.26.*",
     "openpyxl==3.1.*",
     "pandas==2.2.*",
+    "pgvector>=0.5.0",
     "psutil==5.9.*",
     "psycopg>=3.3.3",
     "py-gfm==2.0.0",
diff --git a/usaspending_api/llm/migrations/0002_create_pgvector.py b/usaspending_api/llm/migrations/0002_create_pgvector.py
new file mode 100644
index 0000000000..c77999035b
--- /dev/null
+++ b/usaspending_api/llm/migrations/0002_create_pgvector.py
@@ -0,0 +1,9 @@
+from django.db import migrations
+from pgvector.django import VectorExtension
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [("llm", "0001_initial")]
+
+    operations = [VectorExtension()]
diff --git a/uv.lock b/uv.lock
index d34a6f8344..5590d8f050 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1343,6 +1343,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/31/9e/6ebb433de864a6cd45716af52a4d7a8c3c9aaf3a98368e61db9e69e69a9c/pandas-2.2.3-cp310-cp310-win_amd64.whl", hash = "sha256:56534ce0746a58afaf7942ba4863e0ef81c9c50d3f0ae93e9497d6a41a057645", size = 11598471, upload-time = "2024-09-20T13:08:53.332Z" },
 ]
 
+[[package]]
+name = "pgvector"
+version = "0.5.0"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/a7/ec/6eb80aebc728200f95229219882994c1b0585b956ca47da5edb9d062627a/pgvector-0.5.0.tar.gz", hash = "sha256:07a9dcf735696879406983afc6eba9a787cef7c0cf6c367ca1a5779f036dee74", size = 35170, upload-time = "2026-07-06T18:27:27.767Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/5c/e4/a5573f2c579ca9ad133293bfb624148ba0893674ca4a6eeec85ced9a6a09/pgvector-0.5.0-py3-none-any.whl", hash = "sha256:fedc9800894e6da2be51358d7b7c574bf34f247ca741a5a09513622135f5964f", size = 30958, upload-time = "2026-07-06T18:27:26.797Z" },
+]
+
 [[package]]
 name = "pip"
 version = "23.2.1"
@@ -1965,6 +1974,7 @@ dependencies = [
     { name = "opentelemetry-semantic-conventions" },
     { name = "opentelemetry-util-http" },
     { name = "pandas" },
+    { name = "pgvector" },
     { name = "psutil" },
     { name = "psycopg" },
     { name = "py-gfm" },
@@ -2090,6 +2100,7 @@ requires-dist = [
     { name = "opentelemetry-util-http", specifier = "==0.49b2" },
     { name = "packaging", marker = "extra == 'server'", specifier = "==22.0" },
     { name = "pandas", specifier = "==2.2.*" },
+    { name = "pgvector", specifier = ">=0.5.0" },
     { name = "pip", marker = "extra == 'dev'", specifier = "==23.2.*" },
     { name = "pre-commit", marker = "extra == 'dev'", specifier = "==3.6.2" },
     { name = "psutil", specifier = "==5.9.*" },