diff --git a/Gopkg.lock b/Gopkg.lock
index 33b08a8..7324683 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -100,12 +100,12 @@
   version = "v1.4.0"
 
 [[projects]]
-  digest = "1:b8870bf2606dca65dc382f4cb8b7a434f17ff36a915451bda12788e9620be368"
+  digest = "1:08c58ac78a8c1f61e9a96350066d30fe194b8779799bd932a79932a5166a173f"
   name = "github.com/kelseyhightower/envconfig"
   packages = ["."]
   pruneopts = "NUT"
-  revision = "f611eb38b3875cc3bd991ca91c51d06446afa14c"
-  version = "v1.3.0"
+  revision = "0b417c4ec4a8a82eecc22a1459a504aa55163d61"
+  version = "v1.4.0"
 
 [[projects]]
   digest = "1:4059c14e87a2de3a434430340521b5feece186c1469eff0834c29a63870de3ed"