diff --git a/_external/resources/wai-intro-wcag b/_external/resources/wai-intro-wcag
index aeca75f4d73..90c18bc1278 160000
--- a/_external/resources/wai-intro-wcag
+++ b/_external/resources/wai-intro-wcag
@@ -1 +1 @@
-Subproject commit aeca75f4d7393e06a948bfa3590009822b7542d3
+Subproject commit 90c18bc1278af8e1864beb0a0de04a21a25e1cf3