diff --git a/Gopkg.lock b/Gopkg.lock
index 7e9e7063..e7f68c69 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -29,7 +29,7 @@
   branch = "master"
   name = "github.com/aead/poly1305"
   packages = ["."]
-  revision = "6cf43fdfd7a228cf3003ae23d10ddbf65e85997b"
+  revision = "969857f48f7ae439b6d2449ed1dcd9aaabc49c67"
 
 [[projects]]
   branch = "master"
@@ -148,7 +148,7 @@
     "poly1305",
     "salsa20/salsa"
   ]
-  revision = "f70185d77e8278766928032ee1355e3da47e7181"
+  revision = "d6449816ce06963d9d136eee5a56fca5b0616e7e"
 
 [[projects]]
   branch = "master"
@@ -164,7 +164,7 @@
     "ipv6",
     "lex/httplex"
   ]
-  revision = "61147c48b25b599e5b561d2e9c4f3e1ef489ca41"
+  revision = "500e7a4f953ddaf55d316b4d3adc516aa0379622"
 
 [[projects]]
   branch = "master"
@@ -176,7 +176,7 @@
     "windows/svc/eventlog",
     "windows/svc/mgr"
   ]
-  revision = "3b87a42e500a6dc65dae1a55d0b641295971163e"
+  revision = "2281fa97ef7b0c26324634d5a22f04babdac8713"
 
 [[projects]]
   name = "golang.org/x/text"
diff --git a/vendor/github.com/aead/poly1305/.travis.yml b/vendor/github.com/aead/poly1305/.travis.yml
index d6a5fb5d..8b31b257 100644
--- a/vendor/github.com/aead/poly1305/.travis.yml
+++ b/vendor/github.com/aead/poly1305/.travis.yml
@@ -1,8 +1,9 @@
 language: go
 
 go:
-  - 1.7
-  - 1.8
+  - "1.8.x"
+  - "1.9.x"
+  - "1.10.x"
 
 env:
   - TRAVIS_GOARCH=amd64
@@ -13,4 +14,8 @@ before_install:
 
 branches:
   only:
-  - master
\ No newline at end of file
+  - master
+
+script:
+- diff -au <(gofmt -d .) <(printf "")
+- go test -v ./...
\ No newline at end of file
diff --git a/vendor/github.com/aead/poly1305/poly1305_ref.go b/vendor/github.com/aead/poly1305/poly1305_ref.go
index f38bbdb3..30177ede 100644
--- a/vendor/github.com/aead/poly1305/poly1305_ref.go
+++ b/vendor/github.com/aead/poly1305/poly1305_ref.go
@@ -138,7 +138,7 @@ func update(msg []byte, flag uint32, h, r *[5]uint32) {
 	r0, r1, r2, r3, r4 := uint64(r[0]), uint64(r[1]), uint64(r[2]), uint64(r[3]), uint64(r[4])
 	R1, R2, R3, R4 := r1*5, r2*5, r3*5, r4*5
 
-	for len(msg) > 0 {
+	for len(msg) >= TagSize {
 		// h += msg
 		h0 += binary.LittleEndian.Uint32(msg[0:]) & 0x3ffffff
 		h1 += (binary.LittleEndian.Uint32(msg[3:]) >> 2) & 0x3ffffff