diff --git a/Project.toml b/Project.toml
index 9cec039..ad060da 100644
--- a/Project.toml
+++ b/Project.toml
@@ -16,7 +16,7 @@ StaticArraysCore = "1e83bf80-4336-4d27-bf5d-d5a4f845583c"
 StaticStrings = "4db0a0c5-418a-4e1d-8806-cb305fe13294"
 StructArrays = "09ab397b-f2b6-538f-b94a-2f83cf4a842a"
 TranscodingStreams = "3bb67fe8-82b1-5028-8e26-92a6c54297fa"
-ZipFile = "a5390f91-8eb1-5f08-bee0-b1d1ffed6cea"
+ZipArchives = "49080126-0e18-4c2a-b176-c102e4b3760c"
 
 [compat]
 AbstractTrees = "0.4"
@@ -30,5 +30,5 @@ StaticArraysCore = "1"
 StaticStrings = "0.2"
 StructArrays = "0.6"
 TranscodingStreams = "0.9"
-ZipFile = "0.10"
+ZipArchives = "0.3"
 julia = "1.8"
diff --git a/src/readers.jl b/src/readers.jl
index d82e9cc..0308231 100644
--- a/src/readers.jl
+++ b/src/readers.jl
@@ -3,7 +3,7 @@
 # Doesn't support deleting, or changing data already written.
 
 using ArgCheck
-using ZipFile
+using ZipArchives
 
 
 abstract type AbstractReader end
@@ -47,19 +47,17 @@ end
 
 
 struct BufferedZipReader <: AbstractReader
-    zipfile::ZipFile.Reader
+    zipfile::ZipBufferReader{Vector{UInt8}}
     function BufferedZipReader(path)
         @argcheck isfile(path)
-        io = IOBuffer(read(path, String))
-        zipfile = ZipFile.Reader(io)
-        new(zipfile)
+        new(ZipBufferReader(read(path)))
     end
 end
 
 function key_names(d::BufferedZipReader)::Vector{String}
-    return map(f->f.name, d.zipfile.files)
+    return zip_names(d.zipfile)
 end
 
 function read_key_idx(d::BufferedZipReader, idx::Int)::Vector{UInt8}
-    read(d.zipfile.files[idx])
+    zip_readentry(d.zipfile, idx)
 end
\ No newline at end of file
diff --git a/src/saving.jl b/src/saving.jl
index 1a264ff..7733307 100644
--- a/src/saving.jl
+++ b/src/saving.jl
@@ -28,13 +28,13 @@ function _save_attrs(writer::AbstractWriter, key_prefix::String, z::Union{ZArray
     if isempty(attrs(z))
         return
     end
-    write_key(writer, key_prefix*".zattrs", sprint(io->JSON3.pretty(io,attrs(z); allow_inf=true)))
+    write_key(writer, key_prefix*".zattrs", codeunits(sprint(io->JSON3.pretty(io,attrs(z); allow_inf=true))))
     return
 end
 
 function _save_zgroup(writer::AbstractWriter, key_prefix::String, z::ZGroup)
     group_key = key_prefix*".zgroup"
-    write_key(writer, group_key, "{\"zarr_format\":2}")
+    write_key(writer, group_key, codeunits("{\"zarr_format\":2}"))
     _save_attrs(writer, key_prefix, z)
     for (k,v) in pairs(children(z))
         @argcheck !isempty(k)
@@ -93,7 +93,7 @@ function _save_zarray(writer::AbstractWriter, key_prefix::String, z::ZArray)
     end
     # store array meta data
     write_key(writer, key_prefix*".zarray",
-        """
+        codeunits("""
         {
             "chunks": [$(join(z.chunks, ", "))],
             "compressor": $(JSON3.write(norm_compressor; allow_inf=true)),
@@ -104,6 +104,6 @@ function _save_zarray(writer::AbstractWriter, key_prefix::String, z::ZArray)
             "shape": [$(join(shape, ", "))],
             "zarr_format": 2
         }
-        """
+        """)
     )
 end
diff --git a/src/writers.jl b/src/writers.jl
index de3e48f..cd3571e 100644
--- a/src/writers.jl
+++ b/src/writers.jl
@@ -3,7 +3,7 @@
 # Doesn't support deleting, or changing data already written.
 
 using ArgCheck
-using ZipFile
+using ZipArchives
 
 
 abstract type AbstractWriter end
@@ -41,7 +41,7 @@ Write to an in memory zipfile, that gets saved to disk on close.
 This writer will overwrite any existing file at `path`
 """
 struct BufferedZipWriter <: AbstractWriter
-    zipfile::ZipFile.Writer
+    zipfile::ZipWriter{IOBuffer}
     path::String
     iobuffer::IOBuffer
     function BufferedZipWriter(path)
@@ -49,14 +49,13 @@ struct BufferedZipWriter <: AbstractWriter
         @argcheck !isdirpath(path)
         mkpath(dirname(path))
         iobuffer = IOBuffer()
-        zipfile = ZipFile.Writer(iobuffer)
+        zipfile = ZipWriter(iobuffer)
         new(zipfile, abspath(path), iobuffer)
     end
 end
 
 function write_key(d::BufferedZipWriter, key::AbstractString, data)::Nothing
-    f = ZipFile.addfile(d.zipfile, key);
-    write(f, data)
+    zip_writefile(d.zipfile, key, data)
     nothing
 end
 
@@ -64,6 +63,5 @@ function closewriter(d::BufferedZipWriter)
     close(d.zipfile)
     open(d.path, "w") do f
         write(f, take!(d.iobuffer))
-        close(d.iobuffer)
     end
 end
\ No newline at end of file