diff --git a/README.md b/README.md
index ba34b40..084f657 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,8 @@ pipeline:
     image: cschlosser/drone-ftps
     hostname: example.com:21
     secrets: [ ftp_username, ftp_password ]
-    secure: true
+    secure: true (default) | false # true = use FTP(S), false = FTP without SSL
+    verify: true (default) | false # true = strong SSL verification, false = supress SSL verification error
     dest_dir: /var/www/mysite
     src_dir: /mysite/static
     exclude:
diff --git a/upload.sh b/upload.sh
index 314043d..bee73a8 100755
--- a/upload.sh
+++ b/upload.sh
@@ -14,6 +14,10 @@ if [ -z "$PLUGIN_SECURE" ]; then
     PLUGIN_SECURE="true"
 fi
 
+if [ -z "$PLUGIN_VERIFY" ]; then
+    PLUGIN_VERIFY="true"
+fi
+
 if [ -z "$PLUGIN_DEST_DIR" ]; then
     PLUGIN_DEST_DIR="/"
 fi
@@ -34,4 +38,11 @@ for i in "${in_arr[@]}"; do
     PLUGIN_INCLUDE_STR="$PLUGIN_INCLUDE_STR -x $i"
 done
 
-lftp -e "set xfer:log 1; set ftp:ssl-force $PLUGIN_SECURE; set ftp:ssl-protect-data $PLUGIN_SECURE; set ftp:ssl-allow $PLUGIN_SECURE; mirror -R $PLUGIN_INCLUDE_STR $PLUGIN_EXCLUDE_STR $(pwd)$PLUGIN_SRC_DIR $PLUGIN_DEST_DIR" -u $FTP_USERNAME,$FTP_PASSWORD $PLUGIN_HOSTNAME
+lftp -e "set xfer:log 1; \
+  set ftp:ssl-allow $PLUGIN_SECURE; \
+  set ftp:ssl-force $PLUGIN_SECURE; \
+  set ftp:ssl-protect-data $PLUGIN_SECURE; \
+  set ssl:verify-certificate $PLUGIN_VERIFY; \
+  set ssl:check-hostname $PLUGIN_VERIFY; \
+  mirror --verbose -R $PLUGIN_INCLUDE_STR $PLUGIN_EXCLUDE_STR $(pwd)$PLUGIN_SRC_DIR $PLUGIN_DEST_DIR" \
+  -u $FTP_USERNAME,$FTP_PASSWORD $PLUGIN_HOSTNAME