diff --git a/cd.sh b/cd.sh
index c863cda..0849e8d 100644
--- a/cd.sh
+++ b/cd.sh
@@ -12,6 +12,7 @@ cd_main () {
     cd_update_packages_catalog
     cd_install_packages_tools
     cd_install_ca
+    cd_update_ca
     cd_set_https_verification_on
     cd_update_packages_catalog
     cd_upgrade_packages
@@ -163,6 +164,14 @@ cd_install_ca () {
     esac
 }
 
+cd_update_ca () {
+    cd_step "Update CA"
+    case "${CD_OS_NAME}" in
+        "debian") update-ca-certificates ;;
+        *) exit 1 ;;
+    esac
+}
+
 cd_set_https_verification_on () {
     cd_step "Set HTTPS verification on"
     case "${CD_OS_NAME}" in