diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 718b54f0c..17f8ee425 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -4,7 +4,7 @@ on:
   merge_group:
 
 env:
-  MDBOOK_VERSION: 0.4.40
+  MDBOOK_VERSION: 0.4.43
 
 jobs:
   code-tests: