diff --git a/Tests/kaas/README.md b/Tests/kaas/README.md
index 6a9737dda..9640d8ff4 100644
--- a/Tests/kaas/README.md
+++ b/Tests/kaas/README.md
@@ -48,11 +48,6 @@ In addition to the core requirements, ensure the following are set up:
 
 * An **OpenStack** environment configured and accessible.
 * A `clouds.yaml` file defining OpenStack credentials and endpoints.
-* An installing the envsubst via this command:
-
-  ```bash
-  GOBIN=/tmp go install github.com/drone/envsubst/v2/cmd/envsubst@latest
-  ```
 
 ### Environment Variables
 
diff --git a/Tests/kaas/plugin/plugin_cluster_stacks_remote_api.py b/Tests/kaas/plugin/plugin_cluster_stacks_remote_api.py
index ff4661b0f..25d0eb857 100644
--- a/Tests/kaas/plugin/plugin_cluster_stacks_remote_api.py
+++ b/Tests/kaas/plugin/plugin_cluster_stacks_remote_api.py
@@ -196,7 +196,7 @@ def _apply_yaml(self, yaml_file, error_msg, kubeconfig=None):
         try:
             # Determine if the file is a local path or a URL
             if os.path.isfile(yaml_file):
-                command = f"/tmp/envsubst < {yaml_file} | kubectl apply -f -"
+                command = f"envsubst < {yaml_file} | kubectl apply -f -"
             else:
                 raise ValueError(f"Unknown file: {yaml_file}")
 
diff --git a/Tests/kaas/requirements.in b/Tests/kaas/requirements.in
index 640831e54..bf8cc3f50 100644
--- a/Tests/kaas/requirements.in
+++ b/Tests/kaas/requirements.in
@@ -1,3 +1,4 @@
 pytest-kind
 kubernetes
 junitparser
+envsubst
diff --git a/Tests/kaas/requirements.txt b/Tests/kaas/requirements.txt
index c36ca21d1..b85b94cc7 100644
--- a/Tests/kaas/requirements.txt
+++ b/Tests/kaas/requirements.txt
@@ -1,5 +1,5 @@
 #
-# This file is autogenerated by pip-compile with Python 3.12
+# This file is autogenerated by pip-compile with Python 3.8
 # by the following command:
 #
 #    pip-compile requirements.in
@@ -12,6 +12,8 @@ certifi==2024.8.30
     #   requests
 charset-normalizer==3.3.2
     # via requests
+envsubst==0.1.5
+    # via -r requirements.in
 google-auth==2.34.0
     # via kubernetes
 idna==3.8