diff --git a/.github/workflows/docs-release.yaml b/.github/workflows/docs-release.yaml
index 2138b3a3..60861eb3 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:0.4.27@sha256:2993682225fbf3998b85706ca4daeabfa795af030924d8fcc4b38f2fbab1aec3
+        uses: docker://ghcr.io/bjw-s/mdbook:0.4.27@sha256:4dfb6b8b2b39ac84ed1d33b481ea147db6d0d697d54b0cb8d4421318f4567214
         with:
           args: bash -c "cd docs && mdbook build"