diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 69d40f5..0f2018a 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -16,33 +16,33 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - '1.6'
           - '1'
-          - '~1.11.0-0'
+          - 'pre'
         os:
           - ubuntu-latest
-          - macOS-13 # intel
-          - macOS-14 # arm
           - windows-latest
         arch:
           - 'x64'
           - 'x86'
-          - 'aarch64'
-        exclude:
+        include:
           - os: ubuntu-latest
-            arch: aarch64
-          - os: windows-latest
-            arch: aarch64
-          - os: macOS-13
+            version: '1.6'
+            arch: x64
+          - os: ubuntu-latest
+            version: '1.6'
             arch: x86
           - os: macOS-13
-            arch: aarch64
-          - os: macOS-14
-            arch: x86
-          - os: macOS-14
+            version: '1'
+            arch: x64
+          - os: macOS-13
+            version: 'pre'
             arch: x64
           - os: macOS-14
-            version: '1.6'
+            version: '1'
+            arch: aarch64
+          - os: macOS-14
+            version: 'pre'
+            arch: aarch64
     steps:
       - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v2
diff --git a/Project.toml b/Project.toml
index 24c7b44..857afe7 100644
--- a/Project.toml
+++ b/Project.toml
@@ -16,6 +16,6 @@ ArgCheck = "2"
 CodecZlib = "0.7"
 InputBuffers = "1"
 PrecompileTools = "1"
-TranscodingStreams = "0.10.5, 0.11"
+TranscodingStreams = "0.9, 0.10, 0.11"
 Zlib_jll = "1"
 julia = "1.6.0"
diff --git a/src/writer.jl b/src/writer.jl
index db7b26a..828e153 100644
--- a/src/writer.jl
+++ b/src/writer.jl
@@ -220,10 +220,11 @@ function zip_newfile(w::ZipWriter, name::AbstractString;
         throw(ArgumentError("compression_method must be Deflate or Store"))
     end
     pe.bit_flags |= level_bits
-    w.transcoder = TranscodingStream(codec, io; sharedbuf=false, stop_on_end=true)
     pe.method = real_compression_method
-    
     write_local_header(io, pe)
+    # io is a WriteOffsetTracker so it is protected from closing
+    # the underlying IO, or sharing buffers incorrectly.
+    w.transcoder = TranscodingStream(codec, io)
     w.partial_entry = pe
     @assert iswritable(w)
     nothing
@@ -277,7 +278,7 @@ Base.isreadable(w::WriteOffsetTracker) = false
 
 # All writes to the underlying IO go through this function.
 # This enables ZipWriter when using zip_writefile to write to any IO that
-# supports Base.unsafe_write and Base.isopen
+# supports Base.unsafe_write
 function Base.unsafe_write(w::WriteOffsetTracker, p::Ptr{UInt8}, n::UInt)::Int
     (n > typemax(Int)) && throw(ArgumentError("too many bytes. Tried to write $n bytes"))
     (w.offset < 0) && throw(ArgumentError("initial offset was negative"))