diff --git a/CHANGELOG.md b/CHANGELOG.md
index 739d9d0..852306a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -21,6 +21,8 @@ Initial release of nf-core/datasync, created with the [nf-core](https://nf-co.re
 
 ### `Fixed`
 
+- [[#73](https://github.com/nf-core/datasync/pull/73)] - Create tmp `files_to_copy.tx` avoiding error with write permissions in work directory ([@delfiterradas](https://github.com/delfiterradas), review by [@atrigila](https://github.com/atrigila) and [@antoniasaracco](https://github.com/antoniasaracco)).
+
 ### `Dependencies`
 
 ### `Deprecated`
diff --git a/workflows/datasync.nf b/workflows/datasync.nf
index 7f64a97..a601e0d 100644
--- a/workflows/datasync.nf
+++ b/workflows/datasync.nf
@@ -106,7 +106,10 @@ workflow DATASYNC {
                     .collect { it.readLines() }
                     .inject { a, b -> a.intersect(b) }
 
-                def copy_files = file("${workDir}/${meta.id}_files_to_copy.txt")
+                def copy_files = java.nio.file.Files.createTempFile(
+                    "${meta.id}_files_to_copy_",
+                    ".txt"
+                )
                 copy_files.text = common.join('\n') + '\n'
 
                 tuple(meta, copy_files)