diff --git a/.gitattributes b/.gitattributes
index 71b25de5fe..ba5608836c 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -15,7 +15,8 @@
 *.json          text
 *.jelly         text
 *.jellytag      text
-*.less          text
+# JENKINS-68887: postcss-less fails to properly parse .less files with Windows line breaks
+*.less          text eol=lf
 *.properties    text
 *.rb            text
 *.sh            text
diff --git a/war/.stylelintrc.js b/war/.stylelintrc.js
index 0adfd78e3b..818e102c38 100644
--- a/war/.stylelintrc.js
+++ b/war/.stylelintrc.js
@@ -1,7 +1,8 @@
 module.exports = {
   extends: "stylelint-config-standard",
   rules: {
-    indentation: null
+    indentation: null,
+    linebreaks: "unix"
   },
   // Keeps the default level to warn to avoid breaking the current
   // CI build environment