diff --git a/conf/init/create_certs.sh b/conf/init/create_certs.sh
index 6cbb9c748..37b528ee3 100755
--- a/conf/init/create_certs.sh
+++ b/conf/init/create_certs.sh
@@ -7,4 +7,9 @@ cp mitm-key.pem /conf/mitm.key
 cp mitm.pem /conf/mitm.cert
 cp mitm.pem /usr/local/share/ca-certificates/mitm.crt
 
+# Add extra trusted certificates
+if [ -d /conf/stack/extra_ca_certs ]; then
+	cp /conf/stack/extra_ca_certs/* /usr/local/share/ca-certificates/
+fi
+
 update-ca-certificates