diff --git a/.github/workflows/docs-release.yaml b/.github/workflows/docs-release.yaml
index f335a0aa..4e5c1c01 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:0.4.25@sha256:5c1144f63c82f133a827a8c5811499a80c0ec1b2ad123f757f8394ae859535f7
+        uses: docker://ghcr.io/bjw-s/mdbook:0.4.25@sha256:a9bdca209e87d0e103b396a36db15ede8627365a6ade41f7168ad887be81114a
         with:
           args: bash -c "cd docs && mdbook build"