diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 3180b0fbc5..2918c5d033 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -9,7 +9,7 @@ on:
 env:
   RUST_LIB_BACKTRACE: 1
   RAYON_NUM_THREADS: 1
-  MDBOOK_QUIZ_VERSION: 0.3.7
+  MDBOOK_QUIZ_VERSION: 0.3.9
   AQUASCOPE_VERSION: 0.3.3
   AQUASCOPE_TOOLCHAIN: nightly-2023-08-25