diff --git a/.env.example b/.env.example
index 5025ea1..36526b6 100644
--- a/.env.example
+++ b/.env.example
@@ -3,4 +3,5 @@ NETBOX_TOKEN=
 REPO_URL=https://github.com/netbox-community/devicetype-library.git
 REPO_BRANCH=master
 IGNORE_SSL_ERRORS=False
+#REQUESTS_CA_BUNDLE=/etc/ssl/certs/ca-certificates.crt # you should enable this if you are running on a linux system
 #SLUGS=c9300-48u isr4431 isr4331
diff --git a/README.md b/README.md
index ad52941..386a92b 100644
--- a/README.md
+++ b/README.md
@@ -87,6 +87,7 @@ The container supports the following env var as configuration :
 - `NETBOX_URL`, used to access netbox
 - `NETBOX_TOKEN`, token for accessing netbox
 - `VENDORS`, a comma-separated list of vendors to import (defaults to None)
+- `REQUESTS_CA_BUNDLE`, path to a CA_BUNDLE for validation if you are using self-signed certificates(file must be included in the container)
 
 To run :