diff --git a/.github/workflows/docs-release.yaml b/.github/workflows/docs-release.yaml
index 844e5216..51bd4285 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:0.4.29@sha256:ae62b8cb124ea69f414e7f0aa98aca35ae3a7f5a23e906122bc4bfedf483e25e
+        uses: docker://ghcr.io/bjw-s/mdbook:0.4.29@sha256:be28c4f29cf5be1c70642309256aa2ce4f2e32c75b617400418e5b9457702256
         with:
           args: bash -c "cd docs && mdbook build"