diff --git a/images/tools/Earthfile b/images/tools/Earthfile
index 2181c1fda9325b3622e851fd89bc7ebc57f10969..e698f435d12b497cc0e7124bf3ee7adcedb75b30 100644
--- a/images/tools/Earthfile
+++ b/images/tools/Earthfile
@@ -181,7 +181,7 @@ mdbook:
     FROM ../mirror+fedora
 
     # renovate: datasource=github-releases depName=rust-lang/mdBook
-    ARG MDBOOK_VERSION=v0.4.48
+    ARG MDBOOK_VERSION=v0.4.49
     ENV MDBOOK_VERSION=${MDBOOK_VERSION}
 
     RUN curl -L "https://github.com/rust-lang/mdBook/releases/download/${MDBOOK_VERSION}/mdbook-${MDBOOK_VERSION}-x86_64-unknown-linux-gnu.tar.gz" | tar xvzf - mdbook \