diff --git a/.travis.yml b/.travis.yml
index 462fc04..592f82c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,8 @@ os:
   - linux
   - osx
 julia:
-  - 0.6
+  - 0.7
+  - 1.0
   - nightly
 notifications:
   email: false
diff --git a/REQUIRE b/REQUIRE
index 7cd87bc..859ad46 100644
--- a/REQUIRE
+++ b/REQUIRE
@@ -1,2 +1 @@
-julia 0.6
-SHA 0.5.3
+julia 0.7
diff --git a/appveyor.yml b/appveyor.yml
index 7eb6a73..c2588f1 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,16 +1,18 @@
 environment:
   matrix:
-  - JULIA_URL: "https://julialang-s3.julialang.org/bin/winnt/x86/0.6/julia-0.6-latest-win32.exe"
-  - JULIA_URL: "https://julialang-s3.julialang.org/bin/winnt/x64/0.6/julia-0.6-latest-win64.exe"
-  - JULIA_URL: "https://julialangnightlies-s3.julialang.org/bin/winnt/x86/julia-latest-win32.exe"
-  - JULIA_URL: "https://julialangnightlies-s3.julialang.org/bin/winnt/x64/julia-latest-win64.exe"
-
-## uncomment the following lines to allow failures on nightly julia
-## (tests will run but not make your overall status red)
-#matrix:
-#  allow_failures:
-#  - JULIA_URL: "https://julialangnightlies-s3.julialang.org/bin/winnt/x86/julia-latest-win32.exe"
-#  - JULIA_URL: "https://julialangnightlies-s3.julialang.org/bin/winnt/x64/julia-latest-win64.exe"
+  - julia_version: 0.7
+  - julia_version: 1
+  - julia_version: nightly
+
+platform:
+  - x86 # 32-bit
+  - x64 # 64-bit
+
+# # Uncomment the following lines to allow failures on nightly julia
+# # (tests will run but not make your overall status red)
+# matrix:
+#   allow_failures:
+#   - julia_version: nightly
 
 branches:
   only:
@@ -24,24 +26,18 @@ notifications:
     on_build_status_changed: false
 
 install:
-  - ps: "[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12"
-# If there's a newer build queued for the same PR, cancel this one
-  - ps: if ($env:APPVEYOR_PULL_REQUEST_NUMBER -and $env:APPVEYOR_BUILD_NUMBER -ne ((Invoke-RestMethod `
-        https://ci.appveyor.com/api/projects/$env:APPVEYOR_ACCOUNT_NAME/$env:APPVEYOR_PROJECT_SLUG/history?recordsNumber=50).builds | `
-        Where-Object pullRequestId -eq $env:APPVEYOR_PULL_REQUEST_NUMBER)[0].buildNumber) { `
-        throw "There are newer queued builds for this pull request, failing early." }
-# Download most recent Julia Windows binary
-  - ps: (new-object net.webclient).DownloadFile(
-        $env:JULIA_URL,
-        "C:\projects\julia-binary.exe")
-# Run installer silently, output to C:\projects\julia
-  - C:\projects\julia-binary.exe /S /D=C:\projects\julia
+  - ps: iex ((new-object net.webclient).DownloadString("https://raw.githubusercontent.com/JuliaCI/Appveyor.jl/version-1/bin/install.ps1"))
 
 build_script:
-# Need to convert from shallow to complete for Pkg.clone to work
-  - IF EXIST .git\shallow (git fetch --unshallow)
-  - C:\projects\julia\bin\julia -e "versioninfo();
-      Pkg.clone(pwd(), \"MD5\"); Pkg.build(\"MD5\")"
+  - echo "%JL_BUILD_SCRIPT%"
+  - C:\julia\bin\julia -e "%JL_BUILD_SCRIPT%"
 
 test_script:
-  - C:\projects\julia\bin\julia -e "Pkg.test(\"MD5\")"
+  - echo "%JL_TEST_SCRIPT%"
+  - C:\julia\bin\julia -e "%JL_TEST_SCRIPT%"
+
+# # Uncomment to support code coverage upload. Should only be enabled for packages
+# # which would have coverage gaps without running on Windows
+# on_success:
+#   - echo "%JL_CODECOV_SCRIPT%"
+#   - C:\julia\bin\julia -e "%JL_CODECOV_SCRIPT%"
diff --git a/src/MD5.jl b/src/MD5.jl
index c7a2ebf..ae5d35d 100644
--- a/src/MD5.jl
+++ b/src/MD5.jl
@@ -1,6 +1,5 @@
 module MD5
 
-# package code goes here
 
 using SHA
 using SHA: lrot, SHA_CTX
@@ -14,7 +13,7 @@ include("core.jl")
 
 
 # Our basic function is to process arrays of bytes
-function md5(data::T) where T<:Union{Array{UInt8,1},NTuple{N,UInt8} where N}
+function md5(data::T) where T<:Union{AbstractVector{UInt8}, NTuple{N,UInt8} where N}
     ctx = MD5_CTX()
     update!(ctx, data)
     return digest!(ctx)
@@ -22,7 +21,7 @@ end
 
 
 # AbstractStrings are a pretty handy thing to be able to crunch through
-md5(str::AbstractString) = md5(Vector{UInt8}(str))
+md5(str::AbstractString) = md5(codeunits(str))
 
 # Convenience function for IO devices, allows for things like:
 # open("test.txt") do f
@@ -30,7 +29,7 @@ md5(str::AbstractString) = md5(Vector{UInt8}(str))
 # done
 function md5(io::IO, chunk_size=4*1024)
     ctx = MD5_CTX()
-    buff = Vector{UInt8}(chunk_size)
+    buff = Vector{UInt8}(undef, chunk_size)
     while !eof(io)
         num_read = readbytes!(io, buff)
         update!(ctx, buff[1:num_read])
diff --git a/test/nettle.jl b/test/nettle.jl
index d29f6d0..b6d8168 100644
--- a/test/nettle.jl
+++ b/test/nettle.jl
@@ -1,7 +1,11 @@
-import Nettle
 # redundant imports, so this file can be run standalone
-using Base.Test
+using Test
 import MD5
+using Random
+
+
+import Nettle
+
 
 function test_equal_state(md5_value::MD5.MD5_CTX,nettle_value::Nettle.Hasher)
     @test nettle_value.state[1:16] ==
@@ -33,3 +37,4 @@ end
         end
     end
 end
+
diff --git a/test/runtests.jl b/test/runtests.jl
index 5bc4c77..a50aff5 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1,5 +1,5 @@
 using MD5
-using Base.Test
+using Test
 
 @testset "String Tests" begin
     # From the reference https://tools.ietf.org/html/rfc1321 (final page)
@@ -14,18 +14,18 @@ using Base.Test
 end
 
 @testset "Different forms of input data consistent" begin
-    for len in [0,1,10,100,1000]
-        bytearray = rand(UInt8, len)
-        str = String(bytearray)
-        stream = IOBuffer(bytearray)
-        @test md5(bytearray) == md5(str)
+    for len in [0,1,10, 100,1000]
+        bytes = rand(UInt8, len)
+        str = String(copy(bytes)) # String will take ownership and empty it's array inputs
+        stream = IOBuffer(bytes)
+        @test md5(bytes) == md5(str)
         @test md5(stream) == md5(str)
     end
 end
 
 @testset "misc" begin
     @test MD5.digestlen(MD5.MD5_CTX) == length(md5(""))
-    @test contains(sprint(show, MD5.MD5_CTX()), "MD5")
+    @test occursin("MD5", sprint(show, MD5.MD5_CTX()))
 end
 
 include("nettle.jl")