diff --git a/lib/version.c b/lib/version.c
index 4a9beb097b112073844489395fc919cc61a4bd18..8191f9593b43a45754949c5e43aecd5cf0c8ad19 100644
--- a/lib/version.c
+++ b/lib/version.c
@@ -114,6 +114,10 @@ char *curl_version(void)
   sprintf(ptr, " zlib/%s", zlibVersion());
   ptr += strlen(ptr);
 #endif
+#ifdef GSSAPI
+  sprintf(ptr, " GSS");
+  ptr += strlen(ptr);
+#endif
 
   return version;
 }
@@ -168,9 +172,16 @@ static curl_version_info_data version_info = {
 #endif
 #ifdef USE_SSLEAY
   | CURL_VERSION_SSL
+  | CURL_VERSION_NTLM /* since this requires OpenSSL */
 #endif
 #ifdef HAVE_LIBZ
   | CURL_VERSION_LIBZ
+#endif
+#ifdef GSSAPI
+  | CURL_VERSION_GSSNEGOTIATE
+#endif
+#ifdef CURLDEBUG
+  | CURL_VERSION_DEBUG
 #endif
   ,
   NULL, /* ssl_version */