diff --git a/src/main.c b/src/main.c
index 3ddbf0029..439db9b77 100644
--- a/src/main.c
+++ b/src/main.c
@@ -346,6 +346,7 @@ static void help(void)
     " -o/--output <file> Write output to <file> instead of stdout",
     " -O/--remote-name   Write output to a file named as the remote file",
     " -p/--proxytunnel   Operate through a HTTP proxy tunnel (using CONNECT)",
+    "    --proxy-digest  Enable Digest authentication on the proxy (H)",
     "    --proxy-ntlm    Enable NTLM authentication on the proxy (H)",
     " -P/--ftp-port <address> Use PORT with address instead of PASV (F)",
     " -q                 If used as the first parameter disables .curlrc",
@@ -469,6 +470,7 @@ struct Configurable {
   bool create_dirs;
   bool ftp_create_dirs;
   bool proxyntlm;
+  bool proxydigest;
 
   char *writeout; /* %-styled format string to output */
   bool writeenv; /* write results to environment, if available */
@@ -1139,6 +1141,7 @@ static ParameterError getparameter(char *flag, /* f or -long-flag */
     {"$b", "ftp-pasv",   FALSE},
     {"$c", "socks5",     TRUE},
     {"$d", "tcp-nodelay",FALSE},
+    {"$e", "proxy-digest",   FALSE},
     {"0", "http1.0",     FALSE},
     {"1", "tlsv1",       FALSE},
     {"2", "sslv2",       FALSE},
@@ -1468,6 +1471,9 @@ static ParameterError getparameter(char *flag, /* f or -long-flag */
       case 'd': /* --tcp-nodelay option */
 	config->tcp_nodelay ^= TRUE;
 	break;
+      case 'e': /* --proxy-digest */
+        config->proxydigest ^= TRUE;
+        break;
       }
       break;
     case '#': /* added 19990617 larsa */
@@ -3352,6 +3358,8 @@ operate(struct Configurable *config, int argc, char *argv[])
                          config->ftp_create_dirs);
         if(config->proxyntlm)
           curl_easy_setopt(curl, CURLOPT_PROXYAUTH, CURLAUTH_NTLM);
+        else if(config->proxydigest)
+          curl_easy_setopt(curl, CURLOPT_PROXYAUTH, CURLAUTH_DIGEST);
 
         /* new in curl 7.10.8 */
         if(config->max_filesize)