diff --git a/Makefile b/Makefile
index e02a5159..4cd4d9fc 100644
--- a/Makefile
+++ b/Makefile
@@ -43,7 +43,7 @@ check-licenses:
 build: dist/lambda.zip # Build lambda.zip in dist/
 
 dist/lambda.zip: $(MAKE_DIR)/pyproject.toml $(MAKE_DIR)/poetry.lock $(shell find src -type f)
-	poetry build-lambda -vv
+	poetry build-lambda -vv && poetry run clean-lambda
 
 deploy: # Deploy the project artefact to the target environment @Pipeline
 	# TODO: Implement the artefact deployment step
diff --git a/poetry.lock b/poetry.lock
index cb1c064d..7c9413a8 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 2.1.2 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.2.1 and should not be changed by hand.
 
 [[package]]
 name = "aiohappyeyeballs"
@@ -1080,14 +1080,14 @@ yaml = ["PyYAML (>=5.4.1)"]
 
 [[package]]
 name = "flask"
-version = "3.1.1"
+version = "3.1.2"
 description = "A simple framework for building complex web applications."
 optional = false
 python-versions = ">=3.9"
 groups = ["main"]
 files = [
-    {file = "flask-3.1.1-py3-none-any.whl", hash = "sha256:07aae2bb5eaf77993ef57e357491839f5fd9f4dc281593a81a9e4d79a24f295c"},
-    {file = "flask-3.1.1.tar.gz", hash = "sha256:284c7b8f2f58cb737f0cf1c30fd7eaf0ccfcde196099d24ecede3fc2005aa59e"},
+    {file = "flask-3.1.2-py3-none-any.whl", hash = "sha256:ca1d8112ec8a6158cc29ea4858963350011b5c846a414cdb7a954aa9e967d03c"},
+    {file = "flask-3.1.2.tar.gz", hash = "sha256:bf656c15c80190ed628ad08cdfd3aaa35beb087855e2f494910aa3774cc4fd87"},
 ]
 
 [package.dependencies]
diff --git a/pyproject.toml b/pyproject.toml
index b3d442b4..7619832b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,8 +26,6 @@ httpx = "^0.28.1"
 yarl = "^1.18.3"
 pydantic = "^2.12.3"
 asgiref = "^3.9.1"
-boto3 = "^1.40.57"
-botocore = "^1.40.57"
 eval-type-backport = "^0.2.2"
 mangum = "^0.19.0"
 wireup = "^2.1.0"
@@ -35,6 +33,8 @@ python-json-logger = "^3.3.0"
 fhir-resources = "^8.0.0"
 python-dateutil = "^2.9.0"
 pyhamcrest = "^2.1.0"
+boto3 = "^1.40.57"
+botocore = "^1.40.57"
 aws-xray-sdk = "2.14.0"
 
 [tool.poetry.group.dev.dependencies]
@@ -73,6 +73,9 @@ docker-platform = "linux/x86_64"
 package-artifact-path = "dist/lambda.zip"
 without = "dev"
 
+[tool.poetry.scripts]
+clean-lambda = "scripts.lambda.clean_lambda:main"
+
 [tool.ruff]
 line-length = 120
 exclude = ["docs/", "scripts/"]
diff --git a/scripts/lambda/__init__.py b/scripts/lambda/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/scripts/lambda/clean_lambda.py b/scripts/lambda/clean_lambda.py
new file mode 100644
index 00000000..88564196
--- /dev/null
+++ b/scripts/lambda/clean_lambda.py
@@ -0,0 +1,58 @@
+import zipfile
+import os
+import shutil
+import tempfile
+import logging
+
+ZIP_PATH = "dist/lambda.zip"
+
+# Configure logging
+logging.basicConfig(
+    level=logging.INFO,
+    format="%(asctime)s [%(levelname)s] %(message)s"
+)
+logger = logging.getLogger(__name__)
+
+# Folders to prune (only safe unused folders)
+BOTOCORE_SAFE_PRUNE = [
+    "botocore/data/s3/tests",
+    "botocore/data/glacier/tests",
+]
+
+BOTO3_SAFE_PRUNE = [
+    "boto3/examples"
+]
+
+def main():
+    if not os.path.exists(ZIP_PATH):
+        logger.warning("ZIP file %s does not exist. Skipping cleanup.", ZIP_PATH)
+        return
+
+    tmp_dir = tempfile.mkdtemp(prefix="lambda_clean_")
+    logger.info("Unzipping %s...", ZIP_PATH)
+    with zipfile.ZipFile(ZIP_PATH, "r") as z:
+        z.extractall(tmp_dir)
+
+    # Remove only safe folders
+    for folder_list in [BOTOCORE_SAFE_PRUNE, BOTO3_SAFE_PRUNE]:
+        for rel in folder_list:
+            target = os.path.join(tmp_dir, rel)
+            if os.path.exists(target):
+                logger.info("Removing %s", target)
+                shutil.rmtree(target)
+
+    # Re-create the cleaned zip
+    logger.info("Re-zipping cleaned Lambda package...")
+    with zipfile.ZipFile(ZIP_PATH, "w", zipfile.ZIP_DEFLATED) as z:
+        for root, _, files in os.walk(tmp_dir):
+            for f in files:
+                abs_path = os.path.join(root, f)
+                rel_path = os.path.relpath(abs_path, tmp_dir)
+                z.write(abs_path, rel_path)
+
+    shutil.rmtree(tmp_dir)
+    logger.info("Cleaned Lambda saved at %s", ZIP_PATH)
+
+if __name__ == "__main__":
+    logger.info("Running clean_lambda.py...")
+    main()