diff --git a/deploy-chunked.sh b/deploy-chunked.sh
index 94358cb..d8bc217 100644
--- a/deploy-chunked.sh
+++ b/deploy-chunked.sh
@@ -47,6 +47,7 @@ MAX_WAIT=600      # maximum wait time in seconds (10 minutes)
 
 # Security configuration (optional)
 CERT_FILE=""                    # Path to client certificate file (leave empty to skip)
+KEY_FILE=""                     # Path to client private key file (leave empty to skip)
 X_FORWARDED_FOR=""             # X-Forwarded-For header value (leave empty to skip)
 MY_APIM_KEY=""                 # My-APIM-KEY header value (leave empty to skip)
 
@@ -105,6 +106,14 @@ if [ -n "$CERT_FILE" ]; then
     CURL_OPTS="$CURL_OPTS --cert $CERT_FILE"
 fi
 
+if [ -n "$KEY_FILE" ]; then
+    if [ ! -f "$KEY_FILE" ]; then
+        log_error "Key file not found: $KEY_FILE"
+        exit 1
+    fi
+    CURL_OPTS="$CURL_OPTS --key $KEY_FILE"
+fi
+
 if [ -n "$X_FORWARDED_FOR" ]; then
     CURL_OPTS="$CURL_OPTS -H \"X-Forwarded-For: $X_FORWARDED_FOR\""
 fi