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 6360c6a..bedce7c 100644
--- a/user-restricted-combined-auth-tutorials/nhs-login/php/yarn.lock
+++ b/user-restricted-combined-auth-tutorials/nhs-login/php/yarn.lock
@@ -2645,9 +2645,9 @@ 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 "7.1.5"
-  resolved "https://registry.yarnpkg.com/postcss-selector-parser/-/postcss-selector-parser-7.1.5.tgz#ee7b090724eb60739b530660e5b402200e694a97"
-  integrity sha512-KvvtD7SrlBP7dlgkBghEE3r84CABm5SmV2aNcG4oCA+qDnJ/tvKonFVvwWAyyWUEwxuNawdfEAZKP9zM3oZ2Uw==
+  version "7.1.6"
+  resolved "https://registry.yarnpkg.com/postcss-selector-parser/-/postcss-selector-parser-7.1.6.tgz#45e970f2d93d4547d6754167ed1132f43012c4bf"
+  integrity sha512-7qASPzhKF2l2KLboRZux8CCTRMdGiV08vWmyKzPz22qZ7ZjQBOeY7rNzNoCLSUiftJ7HUq0GERHmxw/t0dCdMw==
   dependencies:
     cssesc "^3.0.0"
     util-deprecate "^1.0.2"