diff --git a/.github/workflows/docs-release.yaml b/.github/workflows/docs-release.yaml
index ca0d387a..4466fdac 100644
--- a/.github/workflows/docs-release.yaml
+++ b/.github/workflows/docs-release.yaml
@@ -30,7 +30,7 @@ jobs:
           fetch-depth: 0
 
       - name: Build docs
-        uses: docker://ghcr.io/bjw-s/mdbook:0.4.31@sha256:c11298e82c62cf89721f4ad26506d7bcb451cc51d889e9348f20a7ae6fc90bd6
+        uses: docker://ghcr.io/bjw-s/mdbook:0.4.34@sha256:c04a31cb120a4bd18df2d43f30f08c2e08c4f51dd7229a751a9ef2b86f439f18
         with:
           args: bash -c "cd docs && mdbook build"