diff --git a/testing/scripts/diff-remove-abspath b/testing/scripts/diff-remove-abspath
index 7206c5d440..eaf90bb415 100755
--- a/testing/scripts/diff-remove-abspath
+++ b/testing/scripts/diff-remove-abspath
@@ -2,6 +2,9 @@
 #
 # Replace absolute paths with the basename.
 
+# The drive letter portion of the Windows regex below is adapted from
+# https://github.com/stdlib-js/stdlib/blob/develop/lib/node_modules/%40stdlib/regexp/basename-windows/lib/regexp.js
 sed -E 's#/+#/#g' |
     sed -E 's#[^( ]*testing_btest#<___>testing_btest#' |
-    sed -E 's#/([^	 :/]{1,}/){1,}([^	 :/]{1,})#<...>/\2#g'
+    sed -E 's#/([^	 :/]{1,}/){1,}([^	 :/]{1,})#<...>/\2#g' |
+    sed -E 's#([a-zA-Z]:|[\\/]{2}[^\\/]+[\\/]+[^\\/]+)([\\/])([^	 :\\/]{1,}[\\/]){1,}([^	 :\\/]{1,})#<...>/\4#g'