diff --git a/packages/OS400/ccsidcurl.c b/packages/OS400/ccsidcurl.c
index 841ca9cbc..acb91b20c 100644
--- a/packages/OS400/ccsidcurl.c
+++ b/packages/OS400/ccsidcurl.c
@@ -933,6 +933,14 @@ curl_formadd_ccsid(struct curl_httppost * * httppost,
 
       break;
 
+    case CURLFORM_CONTENTLEN:
+      lengthx = nargs;
+
+      if(!forms)
+        value = (char *) va_arg(arg, curl_off_t);
+
+      break;
+
     case CURLFORM_NAMELENGTH:
       namelengthx = nargs;
 
diff --git a/packages/OS400/curl.inc.in b/packages/OS400/curl.inc.in
index 86d4808d5..88713562b 100644
--- a/packages/OS400/curl.inc.in
+++ b/packages/OS400/curl.inc.in
@@ -126,20 +126,22 @@
      d CURL_VERSION_UNIX_SOCKETS...
      d                 c                   X'00080000'
       *
-     d HTTPPOST_FILENAME...
+     d CURL_HTTPPOST_FILENAME...
      d                 c                   X'00000001'
-     d HTTPPOST_READFILE...
+     d CURL_HTTPPOST_READFILE...
      d                 c                   X'00000002'
-     d HTTPPOST_PTRNAME...
+     d CURL_HTTPPOST_PTRNAME...
      d                 c                   X'00000004'
-     d HTTPPOST_PTRCONTENTS...
+     d CURL_HTTPPOST_PTRCONTENTS...
      d                 c                   X'00000008'
-     d HTTPPOST_BUFFER...
+     d CURL_HTTPPOST_BUFFER...
      d                 c                   X'00000010'
-     d HTTPPOST_PTRBUFFER...
+     d CURL_HTTPPOST_PTRBUFFER...
      d                 c                   X'00000020'
-     d HTTPPOST_CALLBACK...
+     d CURL_HTTPPOST_CALLBACK...
      d                 c                   X'00000040'
+     d CURL_HTTPPOST_LARGE...
+     d                 c                   X'00000080'
       *
      d CURL_SEEKFUNC_OK...
      d                 c                   0
@@ -1228,6 +1230,12 @@
      d                 c                   00237
      d  CURLOPT_DEFAULT_PROTOCOL...
      d                 c                   10238
+     d  CURLOPT_STREAM_WEIGHT...
+     d                 c                   00239
+     d  CURLOPT_STREAM_DEPENDS...
+     d                 c                   10240
+     d  CURLOPT_STREAM_DEPENDS_E...
+     d                 c                   10241
       *
       /if not defined(CURL_NO_OLDIES)
      d  CURLOPT_FILE   c                   10001
@@ -1318,6 +1326,8 @@
      d                 c                   18
      d  CURLFORM_STREAM...
      d                 c                   19
+     d  CURLFORM_CONTENTLEN...
+     d                 c                   20
       *
      d CURLINFO        s             10i 0 based(######ptr######)               Enum
      d  CURLINFO_EFFECTIVE_URL...                                               CURLINFO_STRING + 1
@@ -1434,6 +1444,10 @@
      d                 c                   8
      d  CURLSSLBACKEND_DARWINSSL...
      d                 c                   9
+     d  CURLSSLBACKEND_AXTLS...
+     d                 c                   10
+     d  CURLSSLBACKEND_MBEDTLS...
+     d                 c                   11
       *
      d curl_closepolicy...
      d                 s             10i 0 based(######ptr######)               Enum
@@ -1699,6 +1713,7 @@
      d   value_ptr                     *   overlay(value)
      d   value_procptr...
      d                                 *   overlay(value) procptr
+     d   value_num                         overlay(value: 8) like(curl_off_t)
       *
      d curl_slist      ds                  based(######ptr######)
      d                                     qualified