diff --git a/src/codeflare_sdk/job/jobs.py b/src/codeflare_sdk/job/jobs.py
index c3814971a..71161f132 100644
--- a/src/codeflare_sdk/job/jobs.py
+++ b/src/codeflare_sdk/job/jobs.py
@@ -22,6 +22,8 @@
 from torchx.schedulers.ray_scheduler import RayScheduler
 from torchx.specs import AppHandle, parse_app_handle, AppDryRunInfo
 
+from ..utils.generate_yaml import update_pip_requirements
+
 
 if TYPE_CHECKING:
     from ..cluster.cluster import Cluster
@@ -90,6 +92,12 @@ def __init__(
         )
         self.image = image
         self.workspace = workspace
+        if "PIP_TRUSTED_HOST" in self.env or "PIP_INDEX_URL" in self.env:
+            update_pip_requirements(self)
+        else:
+            self.env.setdefault("PIP_TRUSTED_HOST", "pypi.org")
+            self.env.setdefault("PIP_INDEX_URL", "https://pypi.org/simple")
+            update_pip_requirements(self)
 
     def _dry_run(self, cluster: "Cluster"):
         j = f"{cluster.config.num_workers}x{max(cluster.config.num_gpus, 1)}"  # # of proc. = # of gpus
diff --git a/src/codeflare_sdk/utils/generate_yaml.py b/src/codeflare_sdk/utils/generate_yaml.py
index a6aae3082..05d238917 100755
--- a/src/codeflare_sdk/utils/generate_yaml.py
+++ b/src/codeflare_sdk/utils/generate_yaml.py
@@ -21,6 +21,7 @@
 import sys
 import os
 import argparse
+from pathlib import Path
 import uuid
 from kubernetes import client, config
 from .kube_api_helpers import _kube_api_error_handling
@@ -689,3 +690,38 @@ def generate_appwrapper(
     else:
         write_user_appwrapper(user_yaml, outfile)
     return outfile
+
+
+def update_pip_requirements(self):
+    pip_trusted_host = self.env.get("PIP_TRUSTED_HOST")
+    pip_index_url = self.env.get("PIP_INDEX_URL")
+    requirements_path = Path("requirements.txt")
+
+    if requirements_path.exists():
+        with requirements_path.open("r") as file:
+            requirements = file.readlines()
+
+        # Check and replace or add --trusted-host and --index-url
+        trusted_host = f"--trusted-host {pip_trusted_host}\n"
+        index_url = f"--index-url {pip_index_url}\n"
+        modified_requirements = []
+
+        for line in requirements:
+            if line.startswith("--trusted-host"):
+                modified_requirements.append(trusted_host)
+                trusted_host = None
+            elif line.startswith("--index-url"):
+                modified_requirements.append(index_url)
+                index_url = None
+            else:
+                modified_requirements.append(line)
+
+        # Append the lines if they were not replaced
+        if trusted_host:
+            modified_requirements.insert(0, trusted_host)
+        if index_url:
+            modified_requirements.insert(0, index_url)
+
+        # Write back the modified requirements
+        with requirements_path.open("w") as file:
+            file.writelines(modified_requirements)
diff --git a/tests/unit_test.py b/tests/unit_test.py
index 0d9403e69..094c227f9 100644
--- a/tests/unit_test.py
+++ b/tests/unit_test.py
@@ -2091,7 +2091,11 @@ def test_DDPJobDefinition_creation():
     assert ddp.memMB == 1024
     assert ddp.h == None
     assert ddp.j == "2x1"
-    assert ddp.env == {"test": "test"}
+    assert ddp.env == {
+        "PIP_TRUSTED_HOST": "pypi.org",
+        "PIP_INDEX_URL": "https://pypi.org/simple",
+        "test": "test",
+    }
     assert ddp.max_retries == 0
     assert ddp.mounts == []
     assert ddp.rdzv_port == 29500