diff --git a/.github/workflows/docs-release.yaml b/.github/workflows/docs-release.yaml
index f38d488e..9e3615e5 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:0.4.28@sha256:69a32d44deb78da8fc27cfe9984fc6f7d6fc8c617a77d362a264db96017a6eba
+        uses: docker://ghcr.io/bjw-s/mdbook:0.4.28@sha256:6221c97849cf9577173be1e95db4b8c4a75d8f9922861ab8b252c2aeaf7fa7c8
         with:
           args: bash -c "cd docs && mdbook build"