diff --git a/user-restricted-combined-auth-tutorials/nhs-login/php/yarn.lock b/user-restricted-combined-auth-tutorials/nhs-login/php/yarn.lock
index 4486398..ed1cab8 100644
--- a/user-restricted-combined-auth-tutorials/nhs-login/php/yarn.lock
+++ b/user-restricted-combined-auth-tutorials/nhs-login/php/yarn.lock
@@ -2675,9 +2675,9 @@ postcss-reduce-transforms@^7.0.3:
     postcss-value-parser "^4.2.0"
 
 postcss-selector-parser@^7.0.0, postcss-selector-parser@^7.1.1:
-  version "7.1.1"
-  resolved "https://registry.yarnpkg.com/postcss-selector-parser/-/postcss-selector-parser-7.1.1.tgz#e75d2e0d843f620e5df69076166f4e16f891cb9f"
-  integrity sha512-orRsuYpJVw8LdAwqqLykBj9ecS5/cRHlI5+nvTo8LcCKmzDmqVORXtOIYEEQuL9D4BxtA1lm5isAqzQZCoQ6Eg==
+  version "7.1.5"
+  resolved "https://registry.yarnpkg.com/postcss-selector-parser/-/postcss-selector-parser-7.1.5.tgz#ee7b090724eb60739b530660e5b402200e694a97"
+  integrity sha512-KvvtD7SrlBP7dlgkBghEE3r84CABm5SmV2aNcG4oCA+qDnJ/tvKonFVvwWAyyWUEwxuNawdfEAZKP9zM3oZ2Uw==
   dependencies:
     cssesc "^3.0.0"
     util-deprecate "^1.0.2"