diff --git a/src/InfoZIP.jl b/src/InfoZIP.jl
index 283cbaa..c588e7b 100644
--- a/src/InfoZIP.jl
+++ b/src/InfoZIP.jl
@@ -5,10 +5,17 @@ module InfoZIP
 
 export open_zip, create_zip
 
+using Compat.readstring
+using Compat.read
+using Compat.write
+if VERSION < v"0.5.0-dev+2228"
+Base.read(cmd::Cmd) = readbytes(cmd)
+end
+
 
 have_infozip = false
 try
-    if ismatch(r"^UnZip.*by Info-ZIP.", readall(`unzip`))
+    if ismatch(r"^UnZip.*by Info-ZIP.", readstring(`unzip`))
         have_infozip = true
     end
 catch
diff --git a/src/info_zip.jl b/src/info_zip.jl
index 0199553..18f7fda 100644
--- a/src/info_zip.jl
+++ b/src/info_zip.jl
@@ -86,9 +86,9 @@ function Base.get(z::Archive, filename::AbstractString, default=nothing)
 
     f = joinpath(z.tempdir, filename)
     if isfile(f)
-        b = open(readbytes, f)
+        b = read(f)
     else 
-        b = readbytes(`unzip -qc $(z.filename) $filename`)
+        b = read(`unzip -qc $(z.filename) $filename`)
     end
     return isvalid(ASCIIString, b) ? ASCIIString(b) :
            isvalid(UTF8String, b)  ? UTF8String(b)  : b
@@ -101,7 +101,7 @@ function Base.setindex!(z::Archive, data, filename::AbstractString)
 
     # Write file to tempdir...
     mkpath(joinpath(z.tempdir, dirname(filename)))
-    open(io->write(io, data), joinpath(z.tempdir, filename), "w")
+    write(joinpath(z.tempdir, filename), data)
 
     # Add filename to "keys"...
     if !(filename in z.keys)
diff --git a/src/zip_file.jl b/src/zip_file.jl
index a2adb0e..4833651 100644
--- a/src/zip_file.jl
+++ b/src/zip_file.jl
@@ -160,7 +160,7 @@ end
 # Read entire file...
 
 function readfile(io::ZipFile.ReadableFile)
-     b = readbytes(io)
+     b = read(io)
      return isvalid(ASCIIString, b) ? ASCIIString(b) :
             isvalid(UTF8String, b)  ? UTF8String(b)  : b
 end
@@ -180,9 +180,7 @@ end
 # Write "data" to "filename" (creating path as needed).
 function mkpath_write(filename::AbstractString, data)
     mkpath(dirname(filename))
-    Base.open(filename, "w") do io
-        write(io, data)
-    end
+    write(filename, data)
 end
 
 
@@ -213,7 +211,7 @@ create_zip(io::IO, files::Array, data::Array) = create_zip(io, zip(files, data).
 # Write to ZIP format from filenames.
 
 function create_zip(io::IO, files::Array)
-    create_zip(io::IO, files, [Base.open(readbytes, f) for f in files])
+    create_zip(io::IO, files, map(read, files))
 end