diff --git a/test/Project.toml b/test/Project.toml
index 14770df..8622d7d 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -4,11 +4,11 @@ Base64 = "2a0f44e3-6c83-55bd-87e4-b1978d98bd5f"
 CodecZlib = "944b1d66-785c-5afd-91f1-9de20f533193"
 LibArchive_jll = "1e303b3e-d4db-56ce-88c4-91e52606a1a8"
 Mmap = "a63ad114-7e13-5084-954f-fe012c677804"
-MutatePlainDataArray = "3b0f367b-da20-4531-811a-c13cc92422b5"
 OffsetArrays = "6fe1bfb0-de20-5000-8ca7-80f57d26f881"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 PythonCall = "6099a3de-0909-46bc-b1f4-468b9a2dfc0d"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
+Setfield = "efcf1570-3423-57d1-acb7-fd33fddbac46"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 TranscodingStreams = "3bb67fe8-82b1-5028-8e26-92a6c54297fa"
 ZipArchives = "49080126-0e18-4c2a-b176-c102e4b3760c"
diff --git a/test/test_reader.jl b/test/test_reader.jl
index 3ff0dca..8ed588a 100644
--- a/test/test_reader.jl
+++ b/test/test_reader.jl
@@ -1,7 +1,7 @@
 include("common.jl")
 using Pkg.Artifacts: @artifact_str, ensure_artifact_installed
 using Base64: base64decode
-using MutatePlainDataArray: aref
+using Setfield: @set
 using p7zip_jll: p7zip_jll
 
 @testset "find_end_of_central_directory_record unit tests" begin
@@ -253,17 +253,18 @@ end
 
     # now try with a bad uncompressed_size
     r = ZipBufferReader(read(joinpath(artifact"fixture", "fixture", "ubuntu22-7zip.zip")))
-    aref(r.entries)[1].uncompressed_size[] = 2
+    correct_entry = r.entries[1]
+    r.entries[1] = @set(correct_entry.uncompressed_size = 2)
     @test_throws ArgumentError zip_test_entry(r, 1)
     @test_throws ArgumentError zip_readentry(r, 1)
 
     # now try with a bad uncompressed_size
     r = ZipBufferReader(read(joinpath(artifact"fixture", "fixture", "ubuntu22-7zip.zip")))
-    aref(r.entries)[1].uncompressed_size[] = typemax(Int64)-1
+    r.entries[1] = @set(correct_entry.uncompressed_size = typemax(Int64)-1)
     @test_throws ArgumentError zip_test_entry(r, 1)
     # @test_throws OutOfMemoryError zip_readentry(r, 1)
 
-    aref(r.entries)[1].uncompressed_size[] = 1<<30
+    r.entries[1] = @set(correct_entry.uncompressed_size = 1<<30)
     @test_throws ArgumentError zip_test_entry(r, 1)
     @test_throws ArgumentError zip_readentry(r, 1)