diff --git a/src/lcerr_easy.h b/src/lcerr_easy.h
index 21da152..573dac0 100644
--- a/src/lcerr_easy.h
+++ b/src/lcerr_easy.h
@@ -108,3 +108,6 @@ ERR_ENTRY ( CHUNK_FAILED             )
 #if LCURL_CURL_VER_GE(7,30,0)
 ERR_ENTRY ( NO_CONNECTION_AVAILABLE  )
 #endif
+#if LCURL_CURL_VER_GE(7,38,0)
+ERR_ENTRY ( HTTP2                    )
+#endif
diff --git a/src/lcflags.h b/src/lcflags.h
index c1efbc8..5dd7f79 100644
--- a/src/lcflags.h
+++ b/src/lcflags.h
@@ -3,6 +3,9 @@ FLG_ENTRY(AUTH_NONE                       )
 FLG_ENTRY(AUTH_BASIC                      )
 FLG_ENTRY(AUTH_DIGEST                     )
 FLG_ENTRY(AUTH_GSSNEGOTIATE               )
+#if LCURL_CURL_VER_GE(7,38,0)
+FLG_ENTRY(AUTH_NEGOTIATE                  )
+#endif
 FLG_ENTRY(AUTH_NTLM                       )
 #if LCURL_CURL_VER_GE(7,19,3)
 FLG_ENTRY(AUTH_DIGEST_IE                  )
diff --git a/src/lcurl.c b/src/lcurl.c
index 0645e24..2ca2e12 100644
--- a/src/lcurl.c
+++ b/src/lcurl.c
@@ -90,6 +90,9 @@ static int lcurl_version_info(lua_State *L){
     lua_pushliteral(L, "LIBZ");         lua_pushboolean(L, data->features & CURL_VERSION_LIBZ        ); lua_rawset(L, -3);
     lua_pushliteral(L, "NTLM");         lua_pushboolean(L, data->features & CURL_VERSION_NTLM        ); lua_rawset(L, -3);
     lua_pushliteral(L, "GSSNEGOTIATE"); lua_pushboolean(L, data->features & CURL_VERSION_GSSNEGOTIATE); lua_rawset(L, -3);
+#if LCURL_CURL_VER_GE(7,38,0)
+    lua_pushliteral(L, "GSSAPI");       lua_pushboolean(L, data->features & CURL_VERSION_GSSAPI      ); lua_rawset(L, -3);
+#endif
     lua_pushliteral(L, "DEBUG");        lua_pushboolean(L, data->features & CURL_VERSION_DEBUG       ); lua_rawset(L, -3);
     lua_pushliteral(L, "ASYNCHDNS");    lua_pushboolean(L, data->features & CURL_VERSION_ASYNCHDNS   ); lua_rawset(L, -3);
     lua_pushliteral(L, "SPNEGO");       lua_pushboolean(L, data->features & CURL_VERSION_SPNEGO      ); lua_rawset(L, -3);
diff --git a/src/lua/cURL/impl/cURL.lua b/src/lua/cURL/impl/cURL.lua
index ab10188..ec43355 100644
--- a/src/lua/cURL/impl/cURL.lua
+++ b/src/lua/cURL/impl/cURL.lua
@@ -248,6 +248,7 @@ Easy.setopt_httpauth  = wrap_setopt_flags("httpauth", {
   ["BASIC"           ] = curl.AUTH_BASIC;
   ["DIGEST"          ] = curl.AUTH_DIGEST;
   ["GSSNEGOTIATE"    ] = curl.AUTH_GSSNEGOTIATE;
+  ["NEGOTIATE"       ] = curl.AUTH_NEGOTIATE;
   ["NTLM"            ] = curl.AUTH_NTLM;
   ["DIGEST_IE"       ] = curl.AUTH_DIGEST_IE;
   ["NTLM_WB"         ] = curl.AUTH_NTLM_WB;