diff --git a/environ.rel b/environ.rel
index 387b418..26acff0 100644
--- a/environ.rel
+++ b/environ.rel
@@ -7,7 +7,7 @@
 {release,
 	{"environ_rel", "1.0"},
 	{erts, "5.2.3.6"},
-	[	{kernel, "2.13.3"}, {stdlib, "1.16.3"},
+	[	{kernel, "2.13.4"}, {stdlib, "1.16.4"},
 		{environ, "1.0", temporary},
 		{smtp_client, "1.1", temporary},
 		{temp_listener, "1.0", permanent},