diff --git a/tools/build_defs/shell_toolchain/toolchains/impl/default_commands.bzl b/tools/build_defs/shell_toolchain/toolchains/impl/default_commands.bzl
index d4da1737e..d9231d06b 100644
--- a/tools/build_defs/shell_toolchain/toolchains/impl/default_commands.bzl
+++ b/tools/build_defs/shell_toolchain/toolchains/impl/default_commands.bzl
@@ -61,7 +61,7 @@ fi
     )
 
 def copy_dir_contents_to_dir(source, target):
-    return """cp -L -r --no-target-directory "{}" "{}" """.format(source, target)
+    return """cp -L -p -r --no-target-directory "{}" "{}" """.format(source, target)
 
 def symlink_contents_to_dir(source, target):
     text = """\
diff --git a/tools/build_defs/shell_toolchain/toolchains/impl/linux_commands.bzl b/tools/build_defs/shell_toolchain/toolchains/impl/linux_commands.bzl
index 8cbbe47b1..2b7503728 100644
--- a/tools/build_defs/shell_toolchain/toolchains/impl/linux_commands.bzl
+++ b/tools/build_defs/shell_toolchain/toolchains/impl/linux_commands.bzl
@@ -61,7 +61,7 @@ fi
     )
 
 def copy_dir_contents_to_dir(source, target):
-    return """cp -L -r --no-target-directory "{}" "{}" """.format(source, target)
+    return """cp -L -p -r --no-target-directory "{}" "{}" """.format(source, target)
 
 def symlink_contents_to_dir(source, target):
     text = """\
diff --git a/tools/build_defs/shell_toolchain/toolchains/impl/osx_commands.bzl b/tools/build_defs/shell_toolchain/toolchains/impl/osx_commands.bzl
index 6a91182dd..627b13aa6 100644
--- a/tools/build_defs/shell_toolchain/toolchains/impl/osx_commands.bzl
+++ b/tools/build_defs/shell_toolchain/toolchains/impl/osx_commands.bzl
@@ -70,7 +70,7 @@ local target="$2"
 mkdir -p "${target}"
 for child in "${children[@]:-}"; do
   if [[ -f "$child" ]]; then
-    cp "$child" "$target"
+    cp -p "$child" "$target"
   elif [[ -L "$child" ]]; then
     local actual=$(readlink "$child")
     if [[ -f "$actual" ]]; then
diff --git a/tools/build_defs/shell_toolchain/toolchains/impl/windows_commands.bzl b/tools/build_defs/shell_toolchain/toolchains/impl/windows_commands.bzl
index b9d3d99f4..89dd0042e 100644
--- a/tools/build_defs/shell_toolchain/toolchains/impl/windows_commands.bzl
+++ b/tools/build_defs/shell_toolchain/toolchains/impl/windows_commands.bzl
@@ -61,7 +61,7 @@ fi
     )
 
 def copy_dir_contents_to_dir(source, target):
-    return """cp -L -r --no-target-directory "{}" "{}" """.format(source, target)
+    return """cp -L -p -r --no-target-directory "{}" "{}" """.format(source, target)
 
 def symlink_contents_to_dir(source, target):
     text = """\